Claude Fable 5.1

ReasoningAnthropic

Mythos-class model tuned for autonomous knowledge work and agentic tasks.

Input: $10.00; per 1M tokens
Output: $50.00; per 1M tokens
Context window: 1M; tokens
Max output: 128K; tokens

Pricing

Prices are in USD per 1M tokens. Cached input is billed at the cache read price.

Input: $10.00/ 1M
Output: $50.00/ 1M
Cache read: $0.25/ 1M
Cache write 5m: $12.50/ 1M
Cache write 1h: $20.00/ 1M

Use it from code

The samples read your key from the ORYNX_API_KEY environment variable.

curl https://api.orynx.dev/v1/messages \
  -H "x-api-key: $ORYNX_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-fable-5-1",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "Explain what an API gateway does in one sentence."}]
  }'

Use it in your tools

Minimal configuration for popular coding agents. Replace sk-orynx-... with your key.

Claude Code

Full guide

~/.claude/settings.json

{
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.orynx.dev",
    "ANTHROPIC_AUTH_TOKEN": "sk-orynx-...",
    "ANTHROPIC_MODEL": "claude-fable-5-1",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1"
  }
}

Cursor

Full guide

Cursor Settings → Models

OpenAI API Key:            sk-orynx-...
Override OpenAI Base URL:  https://api.orynx.dev/v1
Custom model name:         claude-fable-5-1

OpenCode

Full guide

opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "orynx": {
      "npm": "@ai-sdk/anthropic",
      "name": "ORYNX",
      "options": {
        "baseURL": "https://api.orynx.dev/v1",
        "apiKey": "{env:ORYNX_API_KEY}"
      },
      "models": {
        "claude-fable-5-1": {
          "name": "Claude Fable 5.1",
          "limit": {
            "context": 1000000,
            "output": 128000
          }
        }
      }
    }
  }
}

Claude Opus 5

claude-opus-5

Anthropic's flagship for demanding reasoning, coding and long-horizon agent work.

Input: $5.00/ 1M
Output: $25.00/ 1M

Anthropic MessagesOpenAI Chat1M ctx

Claude Fable 5

claude-fable-5

Mythos-class model built for autonomous knowledge work.

Input: $10.00/ 1M
Output: $50.00/ 1M

Anthropic MessagesOpenAI Chat1M ctx

Claude Sonnet 5

claude-sonnet-5

Frontier Sonnet-class model: strong coding and agents at a lower price.

Input: $2.00/ 1M
Output: $10.00/ 1M

Anthropic MessagesOpenAI Chat1M ctx

Claude Fable 5.1

Pricing

Use it from code

Use it in your tools

Claude Code

Cursor

OpenCode

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