> ## Documentation Index
> Fetch the complete documentation index at: https://docs.venice.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Claude Fable 5 API

> Claude Fable 5 API on Venice: 1M context, $10.00 input and $50.00 output per 1M tokens. Anonymized access without your identity.

> [accordion] Plain-text specification
>
> ## Claude Fable 5 API
>
> Claude Fable 5 is a large language model by Anthropic, available on the Venice API as `claude-fable-5`. Requests are anonymized, so the provider never sees your identity.
>
> Claude Fable 5 is a model from Anthropic designed for demanding reasoning and long-horizon agentic work. It features a 1M token context window, 128K max output tokens, always-on adaptive thinking, and strong multimodal capabilities.
>
> ### Claude Fable 5 API pricing
>
> | Model ID | Variant | Privacy | Price |
> | - | - | - | - |
> | `claude-fable-5` | Standard | Anonymized | $10.00 / $50.00 per 1M |
>
> ### Claude Fable 5 specifications
>
> | Spec | Value |
> | - | - |
> | Provider | Anthropic |
> | Released | Jun 10, 2026 |
> | Privacy | Anonymized |
> | Status | Stable |
> | Context window | 1M tokens |
> | Max output | 128K tokens |
> | Reasoning effort | low, medium, high, xhigh, max |
>
> ### How to use the Claude Fable 5 API
>
> Send requests to `POST https://api.venice.ai/api/v1/chat/completions` with `"model": "claude-fable-5"` and your API key.
>
> ```bash theme={"system"}
> curl https://api.venice.ai/api/v1/chat/completions \
>   -H "Authorization: Bearer $VENICE_API_KEY" \
>   -H "Content-Type: application/json" \
>   -d '{
>     "model": "claude-fable-5",
>     "messages": [{ "role": "user", "content": "Explain TEE attestation in two sentences." }],
>     "reasoning_effort": "high"
>   }'
> ```
>
> ### Related models
>
> * [Claude Fable 5.1 API](https://docs.venice.ai/models/claude-fable-5-1.md): $10.00 / $50.00 per 1M
> * [GPT-6 Astra API](https://docs.venice.ai/models/gpt-6-astra.md): $10.00 / $50.00 per 1M
> * [GPT-6 Astra Pro API](https://docs.venice.ai/models/gpt-6-astra-pro.md): $10.00 / $50.00 per 1M
> * [GPT-6.1 Sol Ultrafast API](https://docs.venice.ai/models/gpt-6-1-sol-ultrafast.md): $12.00 / $60.00 per 1M


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