Codebuff vs OpenCode vs Crush vs OpenAI Codex CLI
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
Codebuff
Terminal-based AI coding agent
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| RECATOOLS Score | 6.6 / 10 | 7.9 / 10 | 7.5 / 10 | 8.2 / 10 |
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| Pricing | Paid | Open Source | Freemium | Freemium |
| Free tier | — | MIT-licensed agent is free; bring any provider key, log in with GitHub Copilot or ChatGPT Plus/Pro, or use the free models included | Crush is free under FSL-1.1-MIT with your own API keys or local models. Hyper's free tier gives 100 Hypercredits a month (1 credit = 5 cents) | CLI is open source (Apache-2.0); ChatGPT Free includes limited Codex usage (GPT-6 Luna, desktop app, subject to rollout); otherwise sign in with a paid plan or API key |
| Paid from | 1¢ per credit pay as you go, or Strong subscriptions at $100, $200 or $500 a month | Go $10/mo; Go Plus $40/mo; Zen pay-as-you-go from $20 credit | $20/month Hyper subscription (optional Charm inference, 250 Hypercredits) | Included in ChatGPT Go $8/mo, Plus $20/mo, Pro from $100/mo; or API-key usage |
| Has API | ✓ | ✓ | ✗ | ✓ |
| Open source | ✗ | ✓ | ✓ | ✓ |
| Free to use | ✗ | ✓ | ✓ | ✓ |
| Users | — | — | — | — |
| Founded | 2024 | 2025 | 2025 | 2025 |
| Maker | Freebuff, Inc. | Anomaly Innovations, Inc. | Charmbracelet, Inc. (Charm) | OpenAI |
| Verdict | Codebuff is an open-source, terminal-first coding agent with a TypeScript SDK for building your own agents. It suits developers who live in the command line and want parallel sub-agents and an automatic review pass on ev... |
OpenCode is one of the strongest open-source coding agents: one-line install, any model provider or an existing Copilot or ChatGPT login, parallel sessions, undo snapshots and a GitHub integration, all under the MIT lice... |
Crush brings Charm's TUI craft to agentic coding. LSP context, MCP over stdio, HTTP or SSE, Agent Skills and a long provider list make it one of the most flexible terminal agents, and it ships updates almost weekly.Know... |
Codex CLI is one of the strongest terminal coding agents available: open source, fast, actively maintained and now running OpenAI's GPT-6 models, with a scriptable mode for automation. Its value depends on a ChatGPT subs... |
| Full review → | Full review → | Full review → | Full review → |
Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.