# Claude Code

Find SeedRouter configuration guides and task-based checks for Claude Code model access.

## Connect using the documented environment settings

SeedRouter's [Claude Code guide](https://seedrouter.ai/blog/claude-fable-5-1-claude-code) records configuration and multi-step tests with Claude Code 2.1.280 on September 27, 2026. Use it as the detailed reference, including its model-specific limits and test scope.

Create a [SeedRouter API key](https://seedrouter.ai/apikeys), then configure your shell:

```bash
export ANTHROPIC_BASE_URL=https://api.seedrouter.ai
export ANTHROPIC_API_KEY=sk-your-seedrouter-key
claude --model claude-fable-5-1
```

Keep the key private. Check any existing model aliases or environment settings before starting a session, so background tasks use the models you intend.

## Choose and verify a model

Use the exact identifier from the [model directory](https://seedrouter.ai/models). The configuration guide covers Claude models; the [Kimi coding guide](https://seedrouter.ai/blog/kimi-k3-claude-code-codex) covers a different model family and its own setup. Compatibility details should remain attached to the model and client version that were checked.

For a project test, ask the assistant to read a small file, make a bounded change and run an existing check. Inspect both the actual file diff and the command result. A successful chat response alone does not verify tool use or a complete coding task.

## Understand session cost

Coding sessions can include system instructions, tool definitions, project context and several model calls. Check the [current model rates](https://seedrouter.ai/pricing) and your [usage history](https://seedrouter.ai/usage) rather than estimating a session from the price of a short prompt.

Preserve the existing model's [API documentation](https://seedrouter.ai/docs/api/overview) as the source for supported parameters. Claude Code manages local tools and project permissions; SeedRouter supplies model access. The historical test record is not a guarantee that every newer client release or every model combination behaves identically.

## Related resources

- https://seedrouter.ai/models/claude-opus-5-5
- https://seedrouter.ai/models/claude-fable-5-1
- https://seedrouter.ai/models/kimi-k3
- https://seedrouter.ai/blog/claude-fable-5-1-claude-code
- https://seedrouter.ai/blog/kimi-k3-claude-code-codex