opencode-ide-plugin/packages/web/src/content/docs/zen.mdx

---
title: Zen
description: Curated list of models provided by OpenCode.
---

import config from "../../../config.mjs"
export const console = config.console
export const email = `mailto:${config.email}`

OpenCode Zen is a list of tested and verified models provided by the OpenCode team.

:::note
OpenCode Zen is currently in beta.
:::

Zen works like any other provider in OpenCode. You login to OpenCode Zen and get
your API key. It's **completely optional** and you don't need to use it to use
OpenCode.

---

## Background

There are a large number of models out there but only a few of
these models work well as coding agents. Additionally, most providers are
configured very differently; so you get very different performance and quality.

:::tip
We tested a select group of models and providers that work well with OpenCode.
:::

So if you are using a model through something like OpenRouter, you can never be
sure if you are getting the best version of the model you want.

To fix this, we did a couple of things:

1. We tested a select group of models and talked to their teams about how to
   best run them.
2. We then worked with a few providers to make sure these were being served
   correctly.
3. Finally, we benchmarked the combination of the model/provider and came up
   with a list that we feel good recommending.

OpenCode Zen is an AI gateway that gives you access to these models.

---

## How it works

OpenCode Zen works like any other provider in OpenCode.

1. You sign in to **<a href={console}>OpenCode Zen</a>**, add your billing
   details, and copy your API key.
2. You run `opencode auth login`, select opencode, and paste your API key.
3. Run `/models` in the TUI to see the list of models we recommend.

You are charged per request and you can add credits to your account.

---

## Endpoints

You can also access our models through the following API endpoints.

| Model             | Model ID          | Endpoint                                      | AI SDK Package              |
| ----------------- | ----------------- | --------------------------------------------- | --------------------------- |
| GPT 5             | gpt-5             | `https://opencode.ai/zen/v1/responses`        | `@ai-sdk/openai`            |
| GPT 5 Codex       | gpt-5-codex       | `https://opencode.ai/zen/v1/responses`        | `@ai-sdk/openai`            |
| Claude Sonnet 4.5 | claude-sonnet-4-5 | `https://opencode.ai/zen/v1/messages`         | `@ai-sdk/anthropic`         |
| Claude Sonnet 4   | claude-sonnet-4   | `https://opencode.ai/zen/v1/messages`         | `@ai-sdk/anthropic`         |
| Claude Haiku 4.5  | claude-haiku-4-5  | `https://opencode.ai/zen/v1/messages`         | `@ai-sdk/anthropic`         |
| Claude Haiku 3.5  | claude-3-5-haiku  | `https://opencode.ai/zen/v1/messages`         | `@ai-sdk/anthropic`         |
| Claude Opus 4.1   | claude-opus-4-1   | `https://opencode.ai/zen/v1/messages`         | `@ai-sdk/anthropic`         |
| GLM 4.6           | glm-4.6           | `https://opencode.ai/zen/v1/chat/completions` | `@ai-sdk/openai-compatible` |
| Kimi K2           | kimi-k2           | `https://opencode.ai/zen/v1/chat/completions` | `@ai-sdk/openai-compatible` |
| Qwen3 Coder 480B  | qwen3-coder       | `https://opencode.ai/zen/v1/chat/completions` | `@ai-sdk/openai-compatible` |
| Grok Code Fast 1  | grok-code         | `https://opencode.ai/zen/v1/chat/completions` | `@ai-sdk/openai-compatible` |

The [model id](/docs/config/#models) in your OpenCode config
uses the format `opencode/<model-id>`. For example, for GPT 5 Codex, you would
use `opencode/gpt-5-codex` in your config.

---

### Unified

All models in Zen can also be accessed through a single unified endpoint:

```
https://opencode.ai/zen/v1/chat/completions
```

This endpoint is OpenAI-compatible, so it works seamlessly with the `@ai-sdk/openai-compatible` package and any OpenAI-compatible SDKs or tools.

Use this if you want to simplify integration across multiple models without changing endpoints or SDKs.

This feature is currently in beta.

---

### Models

You can fetch the full list of available models and their metadata from:

```
https://opencode.ai/zen/v1/models
```

---

## Pricing

We support a pay-as-you-go model. Below are the prices **per 1M tokens**.

| Model                             | Input  | Output | Cached Read | Cached Write |
| --------------------------------- | ------ | ------ | ----------- | ------------ |
| GLM 4.6                           | $0.60  | $2.20  | $0.10       | -            |
| Kimi K2                           | $0.60  | $2.50  | $0.36       | -            |
| Qwen3 Coder 480B                  | $0.45  | $1.50  | -           | -            |
| Grok Code Fast 1                  | Free   | Free   | -           | -            |
| Code Supernova                    | Free   | Free   | -           | -            |
| Claude Sonnet 4.5 (≤ 200K tokens) | $3.00  | $15.00 | $0.30       | $3.75        |
| Claude Sonnet 4.5 (> 200K tokens) | $6.00  | $22.50 | $0.60       | $7.50        |
| Claude Sonnet 4 (≤ 200K tokens)   | $3.00  | $15.00 | $0.30       | $3.75        |
| Claude Sonnet 4 (> 200K tokens)   | $6.00  | $22.50 | $0.60       | $7.50        |
| Claude Haiku 4.5                  | $1.00  | $5.00  | $0.10       | $1.25        |
| Claude Haiku 3.5                  | $0.80  | $4.00  | $0.08       | $1.00        |
| Claude Opus 4.1                   | $15.00 | $75.00 | $1.50       | $18.75       |
| GPT 5                             | $1.25  | $10.00 | $0.125      | -            |
| GPT 5 Codex                       | $1.25  | $10.00 | $0.125      | -            |

You might notice _Claude Haiku 3.5_ in your usage history. This is a [low cost model](/docs/config/#models) that's used to generate the titles of your sessions.

:::note
Credit card fees are passed along at cost; we don't charge anything beyond that.
:::

The free models:

- Grok Code Fast 1 is currently free on OpenCode for a limited time. The xAI team is using this time to collect feedback and improve Grok Code.
- Code Supernova is a stealth model that's free on OpenCode for a limited time. The team is using this time to collect feedback and improve the model.

:::tip
Subscription plans and a free tier are coming soon.
:::

<a href={email}>Contact us</a> if you have any questions.

---

## Privacy

All our models are hosted in the US. Our providers follow a zero-retention policy and do not use your data for model training, with the following exceptions:

- Grok Code Fast 1: During its free period, collected data may be used to improve Grok Code.
- Code Supernova: During its free period, collected data may be used to improve
  the model.
- OpenAI APIs: Requests are retained for 30 days in accordance with [OpenAI's Data Policies](https://platform.openai.com/docs/guides/your-data).
- Anthropic APIs: Requests are retained for 30 days in accordance with [Anthropic's Data Policies](https://docs.anthropic.com/en/docs/claude-code/data-usage).

---

## For Teams

Zen also works great for teams. You can invite teammates, assign roles, curate
the models your team uses, and more.

:::note
Workspaces are currently free for teams as a part of the beta.
:::

Managing your workspace is currently free for teams as a part of the beta. We'll be
sharing more details on the pricing soon.

---

### Roles

You can invite teammates to your workspace and assign roles:

- **Admin**: Manage models, members, API keys, and billing
- **Member**: Manage only their own API keys

Admins can also set monthly spending limits for each member to keep costs under control.

---

### Model access

Admins can enable or disable specific models for the workspace. Requests made to a disabled model will return an error.

This is useful for cases where you want to disable the use of a model that
collects data.

---

### Bring your own key

You can use your own OpenAI or Anthropic API keys while still accessing other models in Zen.

When you use your own keys, tokens are billed directly by the provider, not by Zen.

For example, your organization might already have a key for OpenAI or Anthropic
and you want to use that instead of the one that Zen provides.

---

## Goals

We created OpenCode Zen to:

1. **Benchmark** the best models/providers for coding agents.
2. Have access to the **highest quality** options and not downgrade performance or route to cheaper providers.
3. Pass along any **price drops** by selling at cost; so the only markup is to cover our processing fees.
4. Have **no lock-in** by allowing you to use it with any other coding agent. And always let you use any other provider with OpenCode as well.