Which Agent Should I Use?

AI code editor with an agent that edits across files, plus cloud agents.

Free $0; Plus $8/mo; Premium $30/mo; Super $100/mo; Ultra $200/mo; Teams $30+/user/mo

Terminal coding agent from Anthropic that reads, edits and runs code in your repo.

Included with Claude Pro ($20/mo monthly, $17/mo annual) and Max (from $100/mo)

Code completions, chat and a cloud agent that opens pull requests on GitHub.

Free $0; Pro $10/mo; Pro+ $39/mo; Max $100/mo

AI code editor with the Cascade agent.

Free $0; Pro $20/mo; Max $200/mo; Teams $80/mo + $40/user

Autonomous software engineer that works through tickets in its own environment.

See site

Builds and deploys full apps from a prompt inside Replit.

Core $20/mo ($18/mo annual); Pro $100/mo ($90/mo annual)

Prompt-to-web-app builder for full-stack apps.

See site

In-browser prompt-to-app builder from StackBlitz.

Free $0; Pro $25/mo; Teams $30/member/mo

Vercel's agent for generating React/Next.js UI and apps.

Free $0/mo; Plus $30/user/mo; Business $100/user/mo

Open-source AI pair programmer in the terminal that commits changes to git.

Free and open source (you pay your own LLM API costs)

Open-source coding agent for VS Code that plans and acts with your own API key.

See site

Open-source platform for autonomous coding agents (formerly OpenDevin).

See site

OpenAI's coding agent in the CLI, IDE and cloud.

Free $0; Go $8/mo; Plus $20/mo; Pro from $100/mo; Business $20/user/mo

Open-source terminal agent from Google powered by Gemini.

Free and open source (you pay your own LLM API costs)

Open-source library and cloud for letting AI agents control a web browser.

Open-source library free; Cloud is pay-as-you-go per model token (e.g. BU 2.0 $0.60 input / $3.50 output per 1M tokens)

Headless browser infrastructure for AI agents.

Free; Developer $20/mo; Startup $99/mo; Custom

Open-source SDK from Browserbase for natural-language browser actions (act, extract, observe).

Free and open source (you pay your own LLM API costs)

General-purpose autonomous agent that browses, researches and builds deliverables.

See site

Voice AI platform with realistic TTS and conversational voice agents.

Free; Starter $6/mo; Creator $22/mo; Pro $99/mo; Scale $299/mo; Business $990/mo

Developer platform for building phone and web voice agents.

Pay-as-you-go from $0.05/min plus provider costs; $5 free credits to start

Platform for building and deploying AI phone call agents.

Usage-based per minute (voice engine, LLM and telephony billed separately)

Enterprise AI phone calling platform with an API for outbound and inbound calls.

Starts at $0.14/min with no platform fee; higher tiers lower the per-minute rate

Open-source framework and cloud for realtime voice and video AI agents.

Open-source framework free; LiveKit Cloud usage billed per minute

Open-source Python framework for voice and multimodal conversational agents, maintained by Daily.

Free and open source (you pay your own LLM API costs)

AI answer engine with cited sources and deep research mode.

See site

AI research assistant for finding and extracting data from academic papers.

Free tier; Pro $49/user/mo billed annually; higher tiers available

Open-source autonomous agent that writes cited research reports.

Free and open source (you pay your own LLM API costs)

Framework from LangChain for building stateful, controllable agent graphs.

Library free and open source; LangSmith Developer $0/seat, Plus $39/seat/mo

Python framework for orchestrating role-playing multi-agent crews.

See site

Microsoft's open-source framework for multi-agent conversations.

Free and open source (you pay your own LLM API costs)

Lightweight Python framework from OpenAI for multi-agent workflows with handoffs and guardrails.

Free and open source (you pay your own LLM API costs)

Type-safe Python agent framework from the Pydantic team.

Free and open source (you pay your own LLM API costs)

Workflow automation platform with AI agent nodes; self-hostable.

See site