Claude Code vs OpenCode

Best for

• Multi-file refactors
• Migrations
• Delegated engineering tasks

Watch out

Claude Code is included with Pro, Max, Team and Enterprise; Free does not include it. Web prices: Pro $20/month or $200 billed yearly; Max 5x $100/month and Max 20x $200/month; Team Standard $25/seat/month or $20 with annual billing, Premium $125 or $100 respectively; Enterprise $20/seat/month with annual billing plus API-rate usage (https://claude.com/pricing). API credentials can bill separately from subscription usage. Model selection depends on account, user/org settings, provider and client version: default clears an override, while Anthropic API opus and sonnet resolve to Opus 5.5 and Sonnet 5.5. Sonnet 5.5 requires v2.1.284+, Opus 5.5 v2.1.280+. Third-party provider aliases can resolve to older versions. Fable normally resolves to Fable 5.1, except Claude apps gateway sessions use Fable 5; neither is an account-type default. On Pro, Fable uses usage credits; on Max it can use up to 50% of the regular weekly allowance before additional Fable work requires usage credits. Interactive credit consent is not a guarantee for automation: non-interactive -p requests can bill credits without asking. Five-hour and weekly limits depend on plan/model; check the account usage page (https://code.claude.com/docs/en/model-config; https://support.claude.com/en/articles/11049741-what-is-the-max-plan). Native Windows supports shell tools, but Claude's sandbox is available on macOS, Linux and WSL2, not native Windows or WSL1. It is off by default and covers shell execution, not every file tool, MCP server or hook (https://code.claude.com/docs/en/sandboxing).

Best for

• Terminal-first open-source workflows
• Multi-provider model flexibility
• Teams that want Plan mode before edits

Watch out

Zen is pay-as-you-go; Go costs $10/month and Go Plus $40, with the same model token rates and different per-model dollar allowances. Paid-model ceilings use 20% in five hours, 50% weekly and 100% monthly; temporary free models have separately stated terms. Optional Use balance falls back to paid Zen credits after Go limits. Current menus include MiMo V2.6 Flash/Pro, Muse Spark 1.3 Contributor and LongCat 2.5 Preview alongside other changing models (https://opencode.ai/docs/go/). Go's privacy table lists 30-day retention for Grok 4.7/4.6 and GPT-6/5.6 Luna, training for Muse Contributor, and a DeepSeek ZDR agreement currently valid through October 31, renewed monthly. Zen separately lists 30-day OpenAI/Anthropic retention and free/trial exceptions that can log data or use it for improvement; it is not universal ZDR (https://opencode.ai/docs/zen/). Build is permissive by default. The README describes Plan as denying edits, while current agent docs describe edit/bash as ask; inspect or explicitly configure permissions instead of assuming the Plan label prevents writes. --auto approves requests unless explicitly denied. No current numeric agent benchmark is asserted (https://opencode.ai/docs/agents/; https://opencode.ai/docs/permissions/; https://github.com/anomalyco/opencode).