AI agents / Coding agents

OpenCode
by OpenCode
Open-source AI coding agent for terminal, IDE and desktop.
Open sourceFree optionCoding agents
- Open source (MIT)
- Use any provider or your own keys
- Optional low-cost model plans
- You manage provider setup
- Model quality varies by provider
- Community support
| Best for | Developers who want an open, provider-agnostic Claude Code alternative |
|---|---|
| Not for | Users wanting a single vendor-managed service |
| Pricing | Free; optional Zen pay-as-you-go model gateway; Go plan $10/mo |
| Open source | Yes (MIT) |
| Category | Coding agents |
| Verified | 2026-10-14 |
Alternatives
Anthropic's agentic coding tool for the terminal, IDE and desktop app.
+ Works across terminal, supported IDEs and the Claude desktop app
− Not included on the Free plan
Closed sourcePaidCoding agents
OpenAI's coding agent across CLI, IDE extension, desktop app, web and cloud tasks.
+ Limited access even on ChatGPT Free and Go
− Cloud features need Plus or higher
Open sourceFree optionCoding agents
AI-first code editor with an agent that plans and edits across your codebase.
+ Full editor built around agent workflows
− Usage beyond the included pool costs extra
Closed sourceFree optionCoding agents
GitHub's AI pair programmer and coding agent that works from issues to pull requests.
+ Free tier and low-cost Pro
− Agent and chat usage is metered in AI credits
Closed sourceFree optionCoding agents
Related task guides
Sources
Logo used to identify the product; trademarks belong to their owners. Pricing changes often, so confirm on the official site.