Best free or budget
Elicit See Elicit plansAI Research Tools
Updated June 28, 2026: Elicit for systematic-review workflow, Semantic Scholar for academic search/API, Scite for citation context/MCP, NotebookLM for source-grounded notebooks, Perplexity for cited web research, Consensus for academic Q&A, and nanochat for LLM-training education.
Free
Semantic Scholar
Free AI-powered academic search engine from Ai2 with 234M+ live searchable papers, citation trails, recommendations, datasets, and the Academic Graph API.
Editorial · no paid placements
Quick paths
Best pro or team
Harvey See Harvey plansAll tools in AI Research Tools
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Semantic Scholar Free AI-powered academic search engine from Ai2 with 234M+ live searchable papers, citation trails, recommendations, datasets, and the Academic Graph API. - 2
Elicit AI research assistant that automates systematic literature review, paper screening, and structured data extraction from 138M+ academic papers. - 3
Harvey Domain-specific AI platform for legal and professional services. Assistant, Vault, Knowledge, Contract Intelligence, Command Center, and Agents run across legal workflows with current Harvey product updates. - 4 nanochat Andrej Karpathy's minimal, readable LLM training harness for building a small ChatGPT-like model end to end on a single GPU node.
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Scite Smart Citations classify academic citation contexts as Supporting, Contrasting, or Mentioning across Scite's 1.6B+ indexed citations. - 6
Consensus AI-powered academic paper search. Consensus Meter shows study agreement, Pro messages summarize peer-reviewed papers, and Deep reviews handle deeper literature-review passes.Try Consensus freeAffiliate link; no extra cost to you. - 7
Humata Chat-with-your-PDF for students and teams. Free 60 pages/mo, Expert $9.99 (500 pages), Team $49/user (5,000 pages). GPT-5 support remains listed in the pricing matrix. - 8
Connected Papers Visual academic paper graph that maps the conceptual neighborhood around a seed paper using Semantic Scholar's 234M+ paper index. - 9
ChatPDF The original "chat with your PDF" tool has widened into a lightweight document-and-study suite with multi-file folders, non-PDF formats, YouTube chat, AI Research, flashcards, slides, mobile apps, desktop app, and a simple backend API. - 10
Yi (01.AI) Kai-Fu Lee's open-weight LLM family from 01.AI, kept on display while the company pivots into the WorldWise multi-agent enterprise platform. - 11
Hugging Face Open AI collaboration hub for models, datasets, Spaces, inference endpoints, evaluations, and enterprise ML workflows. - 12 Qwen Alibaba Cloud's Qwen model family spans Qwen Studio, Qwen Cloud APIs, hosted Qwen3.7-Max, qwen3.7-plus, and Apache 2.0 open-weight Qwen3 releases from 0.6B through 235B MoE.
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Spellbook AI legal copilot for Microsoft Word and multi-document contract work. Drafts, reviews, asks questions, runs playbooks, and sells on custom per-team pricing with a 7-day trial. - 14
DeepSeek Open-weight Chinese LLM lab offering frontier reasoning and chat at fractions of OpenAI frontier-model pricing. - 15
Reka Physical-AI and multimodal model company behind Reka Edge, Reka Chat, Research, Vision, Infer, and source-available Edge weights for local deployment. - 16
MiniMax Shanghai AI lab behind MiniMax-M3, MiniMax Code, Hailuo video, Speech 2.8, Music 2.6, and the Talkie companion app. - 17
Hume AI Emotion-aware voice AI with the Empathic Voice Interface (EVI), Octave text-to-speech, and an Expression Measurement API that reads tone and emotion. - 18
Kimi Moonshot AI's chatbot and model family, anchored by Kimi K2.6 with strong open-weights coding and agentic benchmarks plus Agent Swarm mode. - 19
MiniMax Speech Multilingual TTS, long-form speech generation, and voice cloning API with Speech 2.8 HD/Turbo as the current model family and subscription or pay-as-you-go pricing. - 20
GLM (ChatGLM) Z.AI's GLM model family, with GLM-5.2 positioned for long-horizon agentic engineering, 1M context, open MIT weights, and API pricing from $1.40/M input tokens.
Overview
AI research tools split into four buyer lanes now: literature review, academic search, citation context, and source-grounded analysis. The right purchase depends on whether the user needs to find papers, evaluate citations, analyze a fixed source set, or research current web material outside academic databases.
As of June 24, 2026, Elicit is AiPedia’s best research-workflow pick because it is built around paper discovery, screening, extraction, evidence tables, reports, API access, and systematic-review workflow; its Basic, Plus, Pro, Scale, and Enterprise ladder still needs billing-cadence verification at purchase time because research-team packaging can move quickly. Semantic Scholar is the free academic-search/API baseline, with its homepage showing 234,531,320 searchable papers and its API page still listing 214 million papers, 2.49 billion citations, and 79 million authors. Scite is the specialist pick when citation context matters, with Basic still verified at $20/month, Pro at $50/month, Organization/Developer on custom terms, and Scite MCP relevant for teams grounding ChatGPT, Claude, Copilot, Cursor, Claude Code, or other MCP clients in Smart Citations. The June 6 Scite vs Semantic Scholar refresh now makes the workflow boundary explicit: use Semantic Scholar to find and map papers for free, then use Scite when a claim, citation, or bibliography needs Supporting/Contrasting/Mentioning context. NotebookLM is best when answers must stay grounded in a reviewed source library and the buyer wants reports, Deep Research, Audio/Video Overviews, data tables, infographics, slide decks, and study artifacts with source review. Perplexity is the best cited-web add-on for current sources, documentation, policy, market, company research, and Search/Sonar API workflows. Consensus is the academic Q&A lane, with Free for testing, Pro at $15/month or $120/year for routine cited answers, Deep at $65/month or $540/year for 200 Deep reviews/month, and Consensus 2.0 Deep Search now usable inside Library and Collections for custom literature-review outputs. The Consensus pricing guide is the plan-decision route for students, researchers, clinicians, and labs choosing between Free, Pro, Deep, Teams, and Enterprise. Connected Papers is now rechecked around higher paid prices: Free is still 5 graphs/month after sign-up, Academic is USD 72/year, Business is USD 240/year, and multi-origin graphs make it more than a single-seed map when the buyer needs to refine a research neighborhood. ChatPDF is now the quick document-chat and study-tool lane, with multi-file folders, non-PDF file support, YouTube chat, AI Research, flashcards, slides, mobile apps, desktop app, and a simple API, while Humata is the paid PDF/team-document lane with Free 60 pages/month, Expert $9.99/month for 500 pages and up to 3 users, Team $49/user/month for 5,000 pages and up to 10 users, OCR, folder permissions, and SOC-2.
The June 24 nanochat refresh keeps it in the LLM check shows 55,379 stars, 7,613 forks, an MIT license, and a May 5, 2026 push timestamp, while the README still frames nanochat as a readable single-node harness for tokenization, pretraining, SFT, RLHF, evaluation, inference infrastructure.
The June 5 Elicit comparison pass refreshed Elicit vs Perplexity, and . The decision split is now cleaner: Elicit is the evidence-workflow layer, nanochat is LLM training education, Perplexity is current cited web research, Scite is citation-context verification, and Semantic Scholar is free discovery plus scholarly metadata/API infrastructure.
The June 4 ChatGPT vs Scite refresh keeps the buyer split explicit: ChatGPT is the broad research assistant for drafting, explaining, and planning, while Scite is the citation-context layer for checking whether later literature supports, contrasts, or merely mentions a claim.
The June 4 Claude vs Elicit refresh adds the matching research-buyer boundary: Claude is the better writing, critique, and synthesis assistant, while Elicit is the dedicated literature-review workflow for paper discovery, screening, extraction tables, and systematic-review-style evidence work.
The June 27 cleanup rechecked the direct research comparison lane after retiring adjacent research-discovery vs pages where field mapping, academic Q&A, systematic review workflow, citation context, and academic search were not direct substitutes. Keep Consensus vs Elicit as the direct workflow comparison, and use this hub for the broader lane split: Connected Papers maps a field, Consensus answers focused academic questions, Elicit manages systematic-review workflow, Scite checks citation context, Semantic Scholar is the free academic-search/API baseline, and nanochat is an educational LLM training harness rather than a paper-search product.
For budget-conscious research teams running their own pipelines, Reka Edge is now a physical-AI and multimodal pricing at $0.10 per million input tokens, with Edge image input at $0.005 and video at $0.03/minute. Its weights are source-available under BSL 1.1 with a commercial threshold, so buyers should not describe it as permissive Apache/MIT open source. Teams evaluating open-weight, long-context extraction or agentic coding around research corpora can also shortlist GLM: GLM-5.1 has MIT Hugging Face weights, 200K context, 128K maximum output, and public Z.AI API pricing, but it is model infrastructure rather than a literature-review workflow. The June 21 MiniMax recheck adds a similar model-infrastructure lane: MiniMax-M3 is worth benchmarking for long-context, native multimodal, coding, or agentic extraction experiments, but it is not a research workflow product and buyers must verify whether their account has >512K input or Priority access before relying on the 1M-context positioning.
The June 10 Yi refresh keeps 01.AI in this hub only as a frozen-model and enterprise-platform research edge case. Yi-Lightning and Yi open models still appear on 01.AI, Hugging Face, and GitHub surfaces, but 01.AI’s active 2026 story is WorldWise/WanZhi 2.5, multi-agent enterprise deployment, and Super Employee products. Use Yi for reproducible baselines, legacy bilingual experiments, or studying 01.AI’s pivot; use active model families such as Qwen, DeepSeek, GLM, Kimi, Reka, or MiniMax for new model-infrastructure evaluation. The June 15 Qwen recheck keeps an important research caveat in place: Qwen Cloud’s newest changelog item is still the June 8 qwen3.7-max snapshot, but the live qwen3.7-max marketplace page still describes text input/output, so modality-sensitive extraction or screen-understanding research should verify the exact endpoint.
The May 31 update adds an important caveat for high-stakes science. OpenAI’s Rosalind Biodefense expansion shows that specialist research models can be powerful but gated. GPT-Rosalind is not a general research subscription; it is a trusted-access life-sciences model program for qualified teams and public-health or biodefense workflows. Treat that as a separate procurement lane from everyday literature review.
For legal and professional-services research, Harvey belongs in a separate enterprise lane from academic tools. Its June 23 refresh keeps Assistant, Vault, Knowledge, Agents, Contract Intelligence, Command Center, Harvey Mobile, the Claude for Legal connector, and the June contract workflow update in scope. It is for matter-grounded legal research, drafting, contract review, and deployment governance inside large firms, not for student literature review. Spellbook sits in the narrower contract-drafting/review lane: the June 9 check keeps pricing custom, the trial at 7 days, and the suite focused on Microsoft Word plus Associate multi-document workflows, not broad academic search.
The June 26 interview-prep guide refresh adds a practical source-grounded research use case: use NotebookLM for a resume/job-description/source packet, Perplexity or Gemini for current company research, and a general assistant only after primary sources are opened. That keeps interview research in the low-stakes preparation lane rather than pretending a chatbot can own evidence judgment.
The June 27 medical-research archive recheck keeps that route noindexed. Current FDA, NIH, and OpenAI GPT-Rosalind/Rosalind Biodefense sources make the editorial bar higher, not lower: a live medical-research guide needs medical-specific evidence standards, privacy/PHI/IRB caveats, regulator context, clear separation from clinical decision support, and specialist life-sciences model coverage before AiPedia should rank tools for that intent.
The wrong move is treating a general chatbot as a research protocol. ChatGPT and Claude can help read, explain, outline, and critique material, but they do not replace database selection, inclusion criteria, source inspection, citation verification, or domain expertise.
Best Picks
| Buyer job | Best starting tool | Why | Watch-out |
|---|---|---|---|
| Systematic or semi-systematic literature review | Elicit | Built around papers, screening, extraction, and evidence tables | Search strategy and extraction fields still need human review |
| Free academic search and citation trails | Semantic Scholar | Strong free discovery layer for papers, authors, related work, and citations | Not a full literature-review workflow by itself |
| Citation support/contrast context | Scite | Helps show whether later papers support, contrast, or merely mention prior work | Coverage depends on indexed literature and publisher access |
| Source-grounded notebooks | NotebookLM | Good when a reviewed source pack should become grounded answers, reports, study artifacts, or Audio/Video Overviews | Discovery and Deep Research still require source-quality review |
| Current cited web research | Perplexity | Fast source trails for current web, policy, product, and market questions | Inspect primary sources before citing |
| Claim-level academic Q&A | Consensus | Useful for quick synthesis from peer-reviewed literature | Treat as a starting point, not the conclusion |
| Visual related-paper mapping | Connected Papers | Helps map a field, add multi-origin roots, and find adjacent or foundational papers | Better for discovery than source evaluation; paid prices are now USD 72/year Academic and USD 240/year Business |
| Quick document chat and study tools | ChatPDF | Fastest low-friction way to ask questions about a document or small folder, then turn material into summaries, flashcards, slides, or timestamped YouTube answers | Not a full literature-review workflow, governed RAG platform, or citation-quality review layer |
| Paid PDF and team document chat | Humata | Free 60 pages/mo, Expert 500 pages, Team 5,000 pages with OCR/folder controls/SOC-2 | Verify citation quality, page caps, and GPT-5 support before high-stakes use |
| Enterprise legal research and matter work | Harvey | Domain-specific legal AI with Vault grounding, Agents, Contract Intelligence, and Command Center | Enterprise-only; lawyer review and procurement controls are mandatory |
What To Buy First
Researchers doing evidence reviews should start with Elicit plus Semantic Scholar. That covers structured workflow and free academic discovery.
Students and analysts working from a fixed set of class readings, PDFs, interviews, or reports should start with NotebookLM. It is safer for source-grounded study than asking a general chatbot to roam.
Small teams that need a dedicated PDF chat workspace should test Humata against their actual scans, tables, contracts, papers, and page volume before paying. Its Team plan is more about OCR, folders, permissions, and SOC-2 than casual single-document Q&A.
Teams checking whether evidence is supported or disputed should evaluate Scite. It is a paid specialist for citation context, not a general writing assistant.
People doing current business, policy, product, or technical research should add Perplexity. It is stronger for fast cited web trails than academic-only tools.
Large law firms and legal departments should evaluate Harvey separately from academic research tools when the work is privileged matter analysis, contract review, drafting, or firm-wide legal AI deployment.
Money Guides
- Best AI Tools for Researchers is the June 27 verified research buyer guide for Elicit, Semantic Scholar, Perplexity, Claude, NotebookLM, Scite, and Consensus across literature review, free academic search, current cited web research, close reading, source notebooks, citation context, and research-integrity rules.
- Best AI for Academic Writing is the June 26 verified adjacent guide for source-grounded writing, literature-review workflows, citation discovery, and academic-integrity-safe AI use.
- Best AI for Citations and References is the June 28 verified citation-integrity guide for Scite, Semantic Scholar, Elicit, Perplexity, NotebookLM, and Consensus, with mobile-friendly buyer paths for citation context, fixed-source notebooks, cited web research, and literature-review workflows.
- Consensus Pricing for Students and Researchers is the Consensus plan-decision guide for Free, Pro, Deep, Teams, and Enterprise, with upgrade guidance around Pro messages, Deep reviews, Library and Collections, and formal-review alternatives.
- Best AI Tools for Students is the June 27 verified student research and study guide for ChatGPT, NotebookLM, Perplexity, Claude, Cursor, Gemini, and Semantic Scholar, with source-grounded class-material study, cited-web research, academic integrity, and coding-assistance boundaries foregrounded.
- Best AI for Data Analysis is the June 26 verified adjacent guide for ChatGPT file analysis, Gemini/Google Sheets workflows, Claude analytical critique, Hex governed data-team notebooks, Julius no-code data agents, Rows spreadsheet AI, and Perplexity cited market research.
- Best AI for Interview Prep is the June 26 verified adjacent guide for ethical prep, source-grounded resume/job-description research, spoken roleplay, company-source checking, and technical mock practice.
- Best AI Tools for Consultants is the June 27 verified adjacent guide for source-backed market, company, vendor, meeting, deck, and memo workflows.
- Best AI Tools for Journalists is the June 27 verified research-safety guide for cited web research, fixed source packs, source logs, academic claim checks, account security, and primary-source verification.
- Best AI Tools for Lawyers is the June 27 verified legal-research and drafting buyer guide for Harvey, Claude, Spellbook, CoCounsel Legal, and Lexis+ with Protege, with authority, citation, privilege, and matter-data checks foregrounded.
- Best AI Tools for Nonprofits is the June 27 verified nonprofit research and reporting guide for NotebookLM source packs, Google Workspace AI, ChatGPT discounts, Claude nonprofit pricing, grant workflows, and donor/beneficiary data safety.
AiPedia is intentionally not promoting the old medical-research guide until it is rebuilt with medical-specific sources, privacy guidance, regulator context, high-stakes safety caveats, and current life-sciences AI coverage.
Trust Rules for Research AI
Do not cite generated text. Cite the original source. Do not treat a linked source trail as proof of truth. Do not upload confidential research, private interviews, patient data, unpublished manuscripts, or restricted institutional material without checking policy and vendor terms. AI can shorten the path to evidence, but it cannot own the evidence judgment.
Sources
- Elicit pricing - verified 2026-06-23.
- Elicit systematic review documentation - verified 2026-06-23.
- Elicit API announcement - verified 2026-06-23.
- Semantic Scholar - verified 2026-06-23.
- Semantic Scholar API - verified 2026-06-23.
- Scite - verified 2026-06-23.
- Scite pricing - verified 2026-06-23.
- Research Solutions Scite MCP announcement - verified 2026-06-23.
- NotebookLM - verified 2026-06-15.
- NotebookLM upgrade help - verified 2026-06-15.
- The Verge NotebookLM Gemini 3.5 update - verified 2026-06-15.
- Yoodli pricing - verified 2026-06-23.
- Yoodli interview practice support - verified 2026-06-23.
- Interviewing.io - verified 2026-06-23.
- Perplexity Enterprise - verified 2026-06-23.
- Perplexity API pricing - verified 2026-06-23.
- Consensus - verified 2026-06-28.
- Consensus pricing - verified 2026-06-28.
- Consensus subscription plans help - verified 2026-06-28.
- How Consensus Works - verified 2026-06-28.
- Consensus product changelog - verified 2026-06-28.
- Connected Papers - verified 2026-06-18.
- Connected Papers pricing - verified 2026-06-18.
- Connected Papers Premium and multi-origin graphs - verified 2026-06-18.
- nanochat GitHub repository - verified 2026-06-24.
- ChatPDF, PDF AI, AI Research, YouTube Chat, and backend API docs - verified 2026-06-23.
- Humata pricing - verified 2026-06-23.
- Humata security - verified 2026-06-23.
- Reka pricing - verified 2026-06-23.
- Reka Edge product page - verified 2026-06-23.
- Z.AI GLM-5.1 docs - verified 2026-06-23.
- Z.AI pricing - verified 2026-06-23.
- GLM-5.1 on Hugging Face - verified 2026-06-23.
- MiniMax M3 model page - verified 2026-06-21.
- MiniMax pay-as-you-go pricing - verified 2026-06-21.
- Qwen Cloud model releases - verified 2026-06-15.
- Qwen3.7-Max model page - verified 2026-06-15.
- 01.AI company site - verified 2026-06-23.
- 01.AI Yi models - verified 2026-06-23.
- Hugging Face 01-ai - verified 2026-06-23.
- Yi GitHub repository - verified 2026-06-23.
- OpenAI GPT-Rosalind for life sciences research - verified 2026-05-31.
- OpenAI Rosalind Biodefense trusted-access expansion - verified 2026-05-31.
- OpenAI new GPT-Rosalind capabilities - verified 2026-06-23.
- NIH reminder on research integrity when using AI - verified 2026-06-23.
- FDA AI-enabled device software lifecycle recommendations - verified 2026-06-23.
- Harvey official site - verified 2026-06-23.
- Harvey blog - verified 2026-06-23.
- Harvey security - verified 2026-06-23.
- Spellbook pricing - verified 2026-06-23.
- Spellbook security - verified 2026-06-23.
Head-to-head decisions
- ChatGPT vs GeminiUpdated June 27, 2026: compare ChatGPT and Gemini for broad assistant work, Google Workspace, Google AI Pro/Ultra, Gemini 3.1 Pro, API pricing, and long-context use.
- ChatGPT vs ClaudeChatGPT vs Claude, verified June 27, 2026: compare ChatGPT's broad GPT-5.5 workspace with Claude Opus 4.8 for writing, coding, long context, pricing, Fable/Mythos suspension, and team fit.
- Claude vs GeminiClaude vs Gemini, verified June 27, 2026: compare Claude Opus 4.8, Claude Code, suspended Fable/Mythos access, Gemini 3.5 Flash, Gemini 3.1 Pro API, Google AI plans, Nano Banana, and Veo.
- Consensus vs ElicitUpdated June 27, 2026: Consensus is best for fast paper-backed answers and study-agreement signals; Elicit is best for screening, extraction, and systematic review workflows.
- DeepSeek vs QwenDeepSeek vs Qwen, verified June 27, 2026: DeepSeek V4 pricing, Qwen3.7-Max, Qwen Cloud pricing, open Qwen3 weights, multilingual fit, and buyer guidance.
- DeepSeek vs Mistral AIDeepSeek vs Mistral AI, verified June 27, 2026: V4 pricing, Mistral Vibe, Studio APIs, Mistral Medium 3.5, Small 4, open weights, EU posture, and buyer fit.
Workflow playbooks
- Best AI for Citations and References (June 2026)A current buyer guide to AI tools for citation context, cited research answers, source-grounded notebooks, literature review references, and bibliography workflows.
- Consensus Pricing for Students and Researchers (June 2026)A source-backed Consensus pricing guide for students, researchers, clinicians, analysts, and labs choosing between Free, Pro, Deep, Teams, and Enterprise.
- Best AI Tools for Researchers (June 2026)A source-backed buyer guide to AI research tools for literature review, paper discovery, citation context, source-grounded notebooks, current web research, and research synthesis.
- Best AI Research Tool for Academic Citations (June 2026)June 28, 2026 buyer guide to the best AI research tools that surface real, citable academic sources, with picks for grad students, faculty, and policy researchers.
- Best AI Tools for Journalists (June 2026)A current, source-backed buyer guide to AI tools for journalists covering research, source trails, interviews, document analysis, writing, editing, account security, and newsroom risk.
- Best AI for Academic Writing (June 2026)A source-backed academic writing guide that separates drafting, source-grounded notes, literature review, citation discovery, editing, and academic integrity risk.
Fast buying answers
Recent product signals
- GLM-5.2 puts open-model pressure back on closed AI subscriptionsJun 24
- AI News Desk, June 10, 2026: Visa payments in ChatGPT, Claude Fable 5, Siri AI, Datadog agents, Copilot workflows, and chatbot market shareJun 10
- Similarweb's May 2026 AI chatbot rankings show ChatGPT still first, with Gemini and Claude close behindJun 10
- Alibaba's Qwen Conference turns Qwen into an agent-cloud platform pushMay 27
- AI News Desk, May 27, 2026: OpenRouter funding, Qwen agents, Windows Copilot, and Samsung's multi-model rolloutMay 27
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