Claude Fable 5.1 API Pricing
Anthropic · Frontier · Proprietary · released 2026-09. Prices in USD per 1 million tokens. Data snapshot: 2026-09-06.
- Input: $10.00 per 1M tokens
- Output: $50.00 per 1M tokens
- Batch API (input/output): $5.00 / $25.00
- Prompt-cache read: $0.25
- Context window: 1M
Cost per request by business use case
List price vs optimized (prompt caching on the cached input share, batch API for async workloads, only where the provider publishes those rates).
| Use case | Tokens (in/out) | Cost/req (list) | Cost/req (optimized) | Monthly @100K req |
|---|---|---|---|---|
| Support Ticket | 1,500 / 500 | $0.040 | $0.031 | $3.1K |
| Knowledge Q&A | 2,000 / 800 | $0.060 | $0.046 | $4.6K |
| Meeting Summary | 10,000 / 1,200 | $0.160 | $0.075 | $7.5K |
| Marketing Content | 2,500 / 1,800 | $0.115 | $0.110 | $11.0K |
| Coding Task | 3,000 / 2,000 | $0.130 | $0.115 | $11.5K |
| Invoice Processing | 1,500 / 600 | $0.045 | $0.020 | $2.0K |
| Call Summary | 2,000 / 700 | $0.055 | $0.027 | $2.7K |
| Agent Workflow | 6,000 / 3,000 | $0.210 | $0.169 | $16.9K |
Claude Fable 5.1 pricing by host
A host is a company that runs the model and sells it by the token — the lab that made it, a cloud platform like Amazon Bedrock, Azure or Vertex, or an independent provider. One model, several sellers, and often several prices. This model is sold by 4 different hosts. The price quoted above is the one we publish so that models stay comparable; it is not necessarily the cheapest way to buy this model. List prices as published on 2026-09-06 via OpenRouter — negotiated rates, committed-use discounts and provisioned capacity are not shown.
| Host | Input $/1M | Output $/1M |
|---|---|---|
| Azure (the price shown above) | $10.00 | $50.00 |
| Anthropic (the price shown above) | $10.00 | $50.00 |
| Amazon Bedrock (the price shown above) | $10.00 | $50.00 |
| Google (the price shown above) | $10.00 | $50.00 |
Common questions about Claude Fable 5.1 pricing
- How much does Claude Fable 5.1 cost?
- Claude Fable 5.1 costs $10.00 per million input tokens and $50.00 per million output tokens on the API.
- Does Claude Fable 5.1 offer batch or cached pricing?
- Yes. Batch API pricing is $5.00/M input and $25.00/M output. Prompt-cache reads cost $0.25/M.
- What would Claude Fable 5.1 cost per month?
- For a support-ticket workload (1,500 input + 500 output tokens per request) at 100K requests/month, Claude Fable 5.1 costs about $4.0K at list prices.
These are list prices: real cost also depends on caching, batching, negotiated discounts, marketplace agreements, and existing contracts. Get a FinOps review from OptimNow or compare all models.
Build the business case for Claude Fable 5.1 in the AI ROI Calculator: add your business value on top of these costs to get ROI, break-even and payback.
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