AI-agent reference · rev 2026
Every AI agent, on one datasheet.
What each one is made of, what it costs, and whether it holds under load. Every part researched, spec'd, sourced and dated, the reference you check before you wire an agent into a system.
The market, measured · last verified 7 Sep 2026
The Agents Index tracks 110 agents across 10 categories, each researched from primary sources and re-verified on a published cadence.
The index
Browse the index
Coding agents26
- The best AI coding agents, ranked — Ranking
- Bolt
- Codex CLI
- OpenCode
- Claude Code vs Cursor — Head-to-head
- Open-Source AI Agent Frameworks — Collection
- Framework, Platform, or Ready-Made AI Agent? — Guide
Support agents12
- The best AI support agents, ranked — Ranking
- Crescendo
- Decagon
- Fin
- Ada vs Decagon (2026): Compare the Two Enterprise AI Support Agents — Head-to-head
- AI Agent Tools With a No-Code Builder — Collection
- AI Support Agents: Decagon vs Sierra vs Intercom Fin — Guide
Sales & marketing agents10
- The best AI sales & marketing agents, ranked — Ranking
- Rox
- Qualified
- Artisan
- Rox vs Unify — Head-to-head
- AI Agent Tools With a Free Tier — Collection
- 11x vs Artisan vs Lead Scorer: 8 AI Sales Agents Compared — Guide
Research & data agents11
- The best AI research agents, ranked — Ranking
- Elicit
- GPT Researcher
- Manus
- GPT Researcher vs Elicit — Head-to-head
- Open Source AI Agent Tools — Collection
- How to Choose an AI Research Agent: 11 Compared — Guide
Voice agents14
- The best AI voice agents, ranked — Ranking
- LiveKit Agents
- ElevenLabs Agents
- Bland
- Vapi vs Retell AI — Head-to-head
- Voice Agent APIs for Developers — Collection
- AI Voice Agents: Vapi vs Retell AI vs ElevenLabs — Guide
Agent frameworks16
- The best AI agent frameworks, ranked — Ranking
- AutoGen
- LlamaIndex
- OpenAI Agents SDK (Python)
- Microsoft AutoGen vs Microsoft Agent Framework — Head-to-head
- AI Agent Tools With Documented Enterprise Security Controls — Collection
- LangChain vs CrewAI vs 12 More Agent Frameworks — Guide
Agent platforms24
- The best AI agent platforms, ranked — Ranking
- Dify
- Lindy
- Relevance AI
- Cresta vs Sierra — Head-to-head
- AI Agent Tools With MCP Support — Collection
- n8n vs Lindy vs Dify: 16 AI Agent Platforms Compared — Guide
Agent tools & infrastructure7
- The best AI agents, ranked — Ranking
- HOL Guard
- Firecrawl
- sipgate flow
- AI Agent Tools With Subscription Pricing — Collection
- AgentBridge
- TinyFish
Agencies & build partners3
All agencies & build partnersLegal agents1
All legal agents
From the research
Have an agent people should find?
Submitting is free, and claiming your listing keeps its facts fresh. Every listing passes the same quality gate; paying never skips it.
Submit an agent, freeFrequently asked questions
How do agents get listed on The Agents Index?
Each listing is a researched record that must pass an automated quality gate (a minimum of structured fields, sourced facts and an on-topic fit-check) before it can be published. Thin pages are structurally impossible.
Is The Agents Index free to use?
Yes. Browsing and searching the directory is free, and submitting an agent is free too. Every submission is researched and quality-gated the same way.
Can an agent pay for a better rank?
Yes, and here is exactly how far. An agent whose maker buys Featured or Premium is placed above the free listings in the same list, with Premium above Featured, and every row a placement moves carries the word "Advertisement" where you see it, on first paint and not behind a click. The lead is finite: at most three paid listings pin to the top of a category or tag page and at most two to the home picks grid, and beyond that a paid listing is spaced through the list rather than stacked. Inside the paid group and the free group alike the order is newest first, then alphabetical, so payment never reorders you against another listing on the same tier. What it never buys: the verdict, any researched fact, an exclusion, the quality gate, or anything at all about a competitor. The whole rule, and why placement is weighted first, is at /methodology.
Can I buy a followed link?
Yes. It costs $99 a year, it auto-renews, and it is one link: the destination link on your own listing page, sold for the exact URL you bought it for. Next to that link, as visible text in the same place and on first paint, sits the word "Advertisement" and a sentence saying you pay for the link. Every other outbound link on the site stays no-follow, so this moves nothing on a category page, a tag page, a best-of, or any listing but yours. It also buys no position: payment is not an input to any order on this site, and a followed link is not an ordering input anywhere in the code. Two named conditions end it before the term does: the destination stops resolving, or we withdraw followed links across the whole fleet, in which case the unused part of your term is refunded. If you change your website URL, the followed attribute does not move with it, because the link was sold and checked for one destination.
How fresh is the data?
Every listing is re-researched on a schedule, and each fact carries the source it was verified from, with the verification date printed on the listing. Changes land in the listing changelog, not silently.
Do you rate or score agents?
No. A rating is only worth reading when its input is independent of whoever publishes it — thousands of verified users, or a product measured on a bench. We do research instead, and any number derived from research would be measuring how much we found, not how good the agent is. So every listing lists the sources it is built from — each labelled with the claims it supports — says when we last re-verified it and what changed, names who it is best for and who it is not for, and lists real limitations.
I built an agent. How do I get it covered?
Submit it free. The research agent builds a sourced listing, the quality gate checks it, and if it fits the taxonomy it publishes. You claim it from your inbox and manage it from your dashboard.