Cosine vs. OpenCode

Feature	Cosine	OpenCode

Tagline	Your coding agent in your terminal.	The open source AI coding agent built for the terminal
Website	https://cosine.sh/cli	https://opencode.ai
Language	go	typescript
Release Date		May 14, 2025
Last Updated	September 4, 2026	June 28, 2026
Provider Type	AI Lab	Independent
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	deep	basic
Multi-File Editing	Yes	Yes
Auto Test Running	Yes	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	VS Code	VS Code, Cursor
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	No	Yes
Context Window	Model dependent	Model-dependent; auto-compact
Terminal Bench 2.0		#66 · 51.7% ²
Supported Models	Lumen Scout, Lumen Outpost; GPT-5.5/5.4, Claude Opus 4.7/4.6, Claude Sonnet 4.6, Gemini 3.1 Pro, Gemini 3 Flash, Kimi K2.6, GLM 5.1, MiniMax M2.7, Qwen 3.6 Plus, DeepSeek v4 Pro	OpenCode managed models, 400+ AI models from OpenRouter - OpenAI, Google, Moonshot AI, xAI, Minimax
Supported Subscriptions	—	ChatGPT SuperGrok GitHub Copilot OpenCode Go / Zen Ollama Cloud
Pricing Model	Usage Based, Freemium, Subscription	Freemium
Free Tier	No	Yes
Price Range	$19-999/mo	Free (BYOK) / $10/mo
Source Code Availability	Proprietary Software	Open Source (MIT)
Source Code	N/A	https://github.com/anomalyco/opencode
Development State	active	active