Anthropic: Claude Fable 5.1 (batch)
The Anthropic Claude Fable 5.1 is a large language model capable of handling various input modalities, including text, image, and file inputs, with a context length of up to 1 million tokens. It also supports tools, reasoning, but does not provide structured output. For those who require a wide range of input options, the Anthropic Claude Fable 5.1 may be worth considering due to its support for text, image, and file inputs. Additionally, its benchmark blended score of 100.0 across one independent benchmark indicates strong performance in this specific metric. However, users should note that the model's price point is steep at $30 per million tokens, which may outweigh its benefits for those with limited budgets or simple tasks.
Benchmark results
Independent, published benchmarks. Blended score 92.0 across 1 benchmark, last refreshed 2026-09-27. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 88.0 |
- Model ID
- anthropic/claude-fable-5.1:batch
- Vendor
- anthropic
- Released
- September 2026
- Tokenizer
- Claude
- Input Modalities
- text, image, file
- Output Modalities
- text
- Max Output
- 128,000 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- yes
What it costs in practice
Computed from the current $5.00/M input and $25.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.19 |
| Classify 1,000 customer emails | 500k in / 50k out | $3.75 |
| A month of a busy support chatbot | 5M in / 2M out | $75.00 |
Similar models
Anthropic: Claude Opus 5
Anthropic: Claude Fable 5 (batch)
Anthropic: Claude Opus 4.8
Anthropic: Claude Opus 4.7
Anthropic: Claude Opus 4.6
Anthropic: Claude Opus 4.5
Quick answers
- How much does Anthropic: Claude Fable 5.1 (batch) cost?
- $5.00 per million input tokens and $25.00 per million output tokens.
- What is Anthropic: Claude Fable 5.1 (batch)'s context window?
- 1,000,000 tokens, roughly 1,500 pages of text in a single request.
- Does Anthropic: Claude Fable 5.1 (batch) support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Anthropic: Claude Fable 5.1 (batch) process images?
- Yes, it accepts image input.