Free models and APIs on OpenCode Zen in 2026
OpenCode Zen is a model gateway for coding agents. Routes with the -free suffix cost nothing for a limited time; we read them from the public Zen catalog on every check.
7 modelsup to 1M contextbest: GLM 5.3 FlashUpdated:
OpenCode Zen
Online at the last check
Models with the -free suffix cost nothing for a limited time; prompts may be used to improve the model.
- Base URL
https://opencode.ai/zen/v1- Compatibility
- OpenAI Chat Completions
- Card
- Check with the provider
- Limits
- Free models are available for a limited time; prompts may be used to improve the model.
| # | Model ↕ | AA Index ↕ | Context ↕ | Size ↕ | Limit | |
|---|---|---|---|---|---|---|
| 1 | 
GLM 5.3 Flash
glm-5.3-flash-free |
41.8 | — | Mid-size | Free models are available for a limited time; prompts may be used to improve the model. | Open |
| 2 | 
DeepSeek V4.1 Flash
deepseek-v4.1-flash-free |
39.5 | — | Frontier | Free models are available for a limited time; prompts may be used to improve the model. | Open |
| 3 | 
Nemotron 3.5 Lightning
nemotron-3.5-lightning-free |
12.9 | — | Mid-size | Free models are available for a limited time; prompts may be used to improve the model. | Open |
| 4 |
Nemotron 3.5 Super VL
nemotron-3.5-super-vl-free |
— | — | Mid-size | Free models are available for a limited time; prompts may be used to improve the model. | Open |
| 5 |
Beam 1.0
beam-free |
— | — | Small | Free models are available for a limited time; prompts may be used to improve the model. | Open |
| 6 |
Flint 40B
flint-40b-free |
— | — | Mid-size | Free models are available for a limited time; prompts may be used to improve the model. | Open |
| 7 |
MiMo V2.6 Flash
mimo-v2.6-flash-free |
— | — | Small | Free models are available for a limited time; prompts may be used to improve the model. | Open |
No models match your filters.
Benchmarks: Artificial Analysis (September 24, 2026). A dash means the model is not on their leaderboard; we never estimate scores ourselves.
FAQ
Is OpenCode Zen free?
Models with the -free suffix cost nothing for a limited time; prompts may be used to improve the model. 7 models are currently free.
Is OpenCode Zen compatible with the OpenAI API?
Yes — use the base URL https://opencode.ai/zen/v1 with any OpenAI-compatible client or SDK.
Does OpenCode Zen require a card?
It depends on the account — check the provider's dashboard.