Claude Fable 5.1 API Pricing
As of October 10, 2026, Claude Fable 5.1 costs $10.00 per 1M input tokens and $50.00 per 1M output tokens on Anthropic, with cache reads at $0.25 and cache writes at $12.50 per 1M tokens. It has a 1,000,000-token context window and returns up to 128,000 tokens per response.
- Input
- $10.00 / 1M tokens
- Output
- $50.00 / 1M tokens
- Cache read
- $0.25 / 1M tokens
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Providers
- 7
- Added to LiteLLM
- September 1, 2026
Claude Fable 5.1 pricing by provider
14 listings across 7 providers. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.
| Provider | Model name in LiteLLM | Input | Output | Cache read | Cache write | Batch in | Batch out | Context |
|---|---|---|---|---|---|---|---|---|
| Anthropic | claude-fable-5-1 | $10.00 | $50.00 | $0.25 | $12.50 | $5.00 | $25.00 | 1M |
| Amazon Bedrock | anthropic.claude-fable-5-1 | $10.00 | $50.00 | $0.25 | $12.50 | – | – | 1M |
| Azure AI Foundry | azure_ai/claude-fable-5-1 | $10.00 | $50.00 | $0.25 | $12.50 | – | – | 1M |
| Databricks | databricks/databricks-claude-fable-5-1 | $10.00 | $50.00 | $0.25 | $12.50 | – | – | 1M |
| GitHub Copilot | github_copilot/claude-fable-5.1 | – | – | – | – | – | – | 200K |
| Google Vertex AI | vertex_ai/claude-fable-5-1 | $10.00 | $50.00 | $0.25 | $12.50 | $5.00 | $25.00 | 1M |
| Google Vertex AI | vertex_ai/claude-fable-5-1@default | $10.00 | $50.00 | $0.25 | $12.50 | $5.00 | $25.00 | 1M |
| Perplexity | perplexity/anthropic/claude-fable-5-1 | $10.00 | $50.00 | $0.25 | – | – | – | – |
| Amazon Bedrockus-gov-east-1 | bedrock/us-gov-east-1/anthropic.claude-fable-5-1 | $12.00 | $60.00 | $0.30 | $15.00 | – | – | 1M |
| Amazon Bedrockus-gov-west-1 | bedrock/us-gov-west-1/anthropic.claude-fable-5-1 | $12.00 | $60.00 | $0.30 | $15.00 | – | – | 1M |
| Amazon BedrockEU cross-region | eu.anthropic.claude-fable-5-1 | $11.00 | $55.00 | $0.275 | $13.75 | – | – | 1M |
| Amazon BedrockGlobal cross-region | global.anthropic.claude-fable-5-1 | $10.00 | $50.00 | $0.25 | $12.50 | – | – | 1M |
| Amazon BedrockUS GovCloud cross-region | us-gov.anthropic.claude-fable-5-1 | $12.00 | $60.00 | $0.30 | $15.00 | – | – | 1M |
| Amazon BedrockUS cross-region | us.anthropic.claude-fable-5-1 | $11.00 | $55.00 | $0.275 | $13.75 | – | – | 1M |
Other Claude Fable 5.1 prices on Anthropic
| Cache write, 1 hour | $20.00 per 1M tokens |
| Web search | $10.00 per 1K searches |
What Claude Fable 5.1 costs in practice
1,000 requests with 2,000 input and 500 output tokens each
| Anthropic | $45.00 |
| Amazon Bedrock | $45.00 |
| Azure AI Foundry | $45.00 |
| Google Vertex AI | $45.00 |
| Anthropic batch | $22.50 |
100 long-document requests with 100,000 input and 2,000 output tokens each
| Anthropic | $110.00 |
| Amazon Bedrock | $110.00 |
| Azure AI Foundry | $110.00 |
| Google Vertex AI | $110.00 |
Claude Fable 5.1 features
- Function calling
- Parallel tool calls
- Structured output
- Image input
- PDF input
- Reasoning
- Prompt caching
- Web search
- Computer use
Use Claude Fable 5.1 with LiteLLM
Call Claude Fable 5.1 through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/chat/completions. LiteLLM tracks the cost of every request at these prices.
from litellm import completion
response = completion(
model="claude-fable-5-1",
messages=[{"role": "user", "content": "Hello!"}],
)model_list:
- model_name: claude-fable-5-1
litellm_params:
model: claude-fable-5-1
api_key: os.environ/ANTHROPIC_API_KEYcurl http://0.0.0.0:4000/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer sk-1234" \
-d '{
"model": "claude-fable-5-1",
"messages": [{"role": "user", "content": "Hello!"}]
}'Claude Fable 5.1 FAQ
How much does Claude Fable 5.1 cost?
Claude Fable 5.1 costs $10.00 per 1M input tokens and $50.00 per 1M output tokens on Anthropic, with cache reads at $0.25 and cache writes at $12.50 per 1M tokens. Batch requests cost $5.00 per 1M input tokens and $25.00 per 1M output tokens.
What is the context window of Claude Fable 5.1?
Claude Fable 5.1 has a 1,000,000-token context window and returns up to 128,000 tokens per response.
Which providers offer Claude Fable 5.1?
Claude Fable 5.1 is available from 7 providers through LiteLLM: Anthropic, Amazon Bedrock, Azure AI Foundry, Databricks, GitHub Copilot, Google Vertex AI and Perplexity. The lowest price is on Anthropic.
How do I call Claude Fable 5.1 with an OpenAI-compatible API?
Use the LiteLLM Python SDK with model="claude-fable-5-1", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.
What features does Claude Fable 5.1 support?
Claude Fable 5.1 supports function calling, parallel tool calls, structured output, image input, PDF input, reasoning, prompt caching, web search and computer use.
When did LiteLLM add Claude Fable 5.1?
Claude Fable 5.1 was added to LiteLLM's model price file on September 1, 2026.
Sources
Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request. Provider pricing pages:
- platform.claude.com/docs/en/about-claude/pricing
- pricing.us-east-1.amazonaws.com/offers/v1.0/aws/AmazonBedrockFoundationModels/current/index.json
- www.databricks.com/product/pricing/proprietary-foundation-model-serving
- cloud.google.com/gemini-enterprise-agent-platform/generative-ai/pricing
LiteLLM docs: Anthropic, Amazon Bedrock, Azure AI Foundry, Databricks, GitHub Copilot, Google Vertex AI.
Provider pages: Anthropic, Amazon Bedrock, Azure AI Foundry, Databricks, GitHub Copilot, Google Vertex AI, Perplexity.