Claude
The best default for long documents and careful agent-style work. Easier to steer than most chats, and less of a do-everything platform than ChatGPT.
Free tier and paid Pro, team, and enterprise plans.
Best tool for agents
Assistants that use tools, follow a task, and hand the work back for review.
9 tools
Editorial pick · Editorial
Other tools for this job
ChatGPT
The default general assistant. Broad enough for everyday writing and light tool use, and less predictable than Claude when a long edit has to stay careful.
Free tier and paid individual, team, and enterprise plans.
Devin Oncall
An on-call agent that starts the moment an alert fires, digs through telemetry and code, and hands you a fix as a pull request.
Part of Cognition's paid Devin plans; sessions draw on Devin usage limits.
Gemini
Worth opening when the work already lives in Google, or when you want image generation in the same chat. Not the first pick for code or a long edit.
Free tier; higher limits sit inside Google's paid AI plans.
Grok Voice 3.0
A speech-to-speech model for voice agents that tops a third-party index at the same price as its predecessor.
Usage-based API pricing per minute of conversation.
LangGraph
A library for building agents as explicit graphs, not a consumer app. The right pick for engineers shipping agents in their own product.
Open-source library. You pay for the models, and optionally for LangSmith.
n8n
The automation pick when you want self-hosting, custom code, and AI steps in one workflow. More setup than Zapier.
Open source and free to self-host. Paid cloud plans if you do not want to host it.
Navige
A cost controller for agents: it moves suitable calls to smaller models, caches repeats and stops runaway loops.
Free monitoring tier; paid plans take a share of measured savings, with a monthly minimum.
withHuman
A bouncer for your agents: it holds risky tool calls until the right person says yes, and waves routine ones through.
Open source, plus a hosted version.