OpenCode Zen
conditional free · aggregator · verification: partially_verified (70%, doc_fetch, 2026-07-17)
The record
| Base URLs | https://opencode.ai/zen/v1 openai-compatible https://opencode.ai/zen/v1 anthropic-compatible |
|---|---|
| API key required | yes |
| Credit card | unknown |
| Phone verification | unknown |
| May train on prompts | yes |
| Quota | free_tier [—] “AI gateway with curated models. Free models may use data for improvement.” |
| Signup friction | 4 steps |
| Env var | OPENCODE_ZEN_API_KEY |
| Notes | Gateway exposes three endpoint shapes under one base: /zen/v1/chat/completions and /zen/v1/responses (OpenAI-style) and /zen/v1/messages (Anthropic-style). Free model ids confirmed on official docs 2026-07-17: big-pickle, deepseek-v4-flash-free, mimo-v2.5-free, north-mini-code-free, nemotron-3-ultra-free. |
Models (4)
| model | capabilities | context | free | limits |
|---|---|---|---|---|
| big-pickle | chat | ? | yes | Free models may use data for improvement. |
| deepseek-v4-flash-free | chat | ? | yes | Free models may use data for improvement. |
| mimo-v2.5-free | chat | ? | yes | Free models may use data for improvement. |
| nemotron-3-ultra-free | chat | ? | yes | Free models may use data for improvement. |
Provenance
| source_opencode_zen_docs | official_docs | trust: high | checked 2026-07-17 |
| source_repo_cheahjs | curated_repo | trust: medium_high | checked 2026-07-17 |