# OpenCode Zen

Promo free (limited time) · API key · code · last checked 30 Aug 2026

Create a key at https://opencode.ai/docs/zen and call it from your harness.

Free models are limited-time promos; some may use data for training. No credit card. OpenAI-compatible base URL opencode.ai/zen/v1. List free models: opencode models | grep -i free

Source: https://opencode.ai/docs/zen

| Model | Cost | Context | RPM | TPM | RPD | Day tokens | Verified |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Big Pickle | zsh (promo) | 256K - 1M | Not published | Not published | Not published | Not published | 2026-08-30 |
| MiMo-V2.5 Free | zsh (promo) | 256K - 1M | Not published | Not published | Not published | Not published | 2026-08-30 |
| Ling 3.0 Flash Fin Free | zsh (promo) | 256K - 1M | Not published | Not published | Not published | Not published | 2026-08-30 |
| Nemotron 3 Ultra Free | zsh (promo) | 256K - 1M | Not published | Not published | Not published | Not published | 2026-08-30 |
| Nemotron 3.5 Lightning Free | zsh (promo) | 256K - 1M | Not published | Not published | Not published | Not published | 2026-08-30 |
| Muse Spark 1.2 Contributor Free | zsh (promo) | 256K - 1M | Not published | Not published | Not published | Not published | 2026-08-30 |

Machine-readable: /data/opencode-zen.json

Numbers cross-checked against official docs and third-party trackers as of 2026-08-30. Limits change without notice — this is a map, not a contract.