- Score
- 9.4 (+3.19 points)
- Total Cost (Current Price)
- $0.183 · 94.6% cheaper
- Response Time (avg)
- 6.24s · 45.2% faster
Anthropic
Release: 2026-09-02
Tested on: 2026-10-01 04:20
anthropic/claude-fable-5.1::low
~9.5T total (~878B active)MoEClosedEstimated
Summary
Claude Fable 5.1 scores 6.2 on AI BENCHY and ranks #264. It has 10.0 reliability, a 55.1% pass rate, $3.395 total cost, and 11.40s average response time.
What makes Claude Fable 5.1 unique: It stands out most in Combined, where it ranks #1, while Agentic is its weakest area at #15.
Recommended alternatives
We recommend choosing one of these models instead:
- Score
- 8.6 (+2.41 points)
- Total Cost (Current Price)
- $0.061 · 98.2% cheaper
- Response Time (avg)
- 7.51s · 34.1% faster
- Score
- 9.6 (+3.39 points)
- Total Cost (Current Price)
- $0.460 · 86.5% cheaper
- Response Time (avg)
- 7.15s · 37.3% faster
Model facts
Researched on 2026-09-02
- Parameters
- ~9.5T total (~878B active)
- Architecture
- MoE
- Availability
- Closed
- License
- -
Best estimate from public evidence; the vendor did not disclose every value. Anthropic does not disclose parameter counts or architecture; estimates follow the Claude Fable 5 family record.
6.2
Consistency
8.9
10.0
$3.395
Total Output Tokens
26,073
Total Input Tokens
209,116
Input Price
$10.000 / 1M
Output Price
$50.000 / 1M
Cache Read Price
$0.250 / 1M
Cache Write Price
$12.500 / 1M
Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.
Flaky tests
3
Flaky tests had mixed outcomes across runs (at least one pass and one fail).
Hamster playing table tennis
Prompt: Create a detailed SVG illustration of a hamster playing table tennis.
#264 Claude Fable 5.1
low- Cost
- $0.126
- Time
- 28.5s
- Tokens
- 2,652 tok
Price History
Historical pricing data for this model from OpenRouter.
| Date | Input Price | Output Price | Cache Read Price | Cache Write Price |
|---|---|---|---|---|
| 2026-10-01 18:33 | $10.000 / 1M | $50.000 / 1M | $0.250 / 1M | $12.500 / 1M |
Charts
Choose the first model, then click a second model to open a side-by-side page.
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Score vs Total Cost
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Score vs Response Time (avg)
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Score vs Total Output Tokens
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Category Breakdown
| Category | Score | Consistency | Tests Correct |
|---|---|---|---|
| Agentic | 2.8 | 1.6 | |
| Anti-AI Tricks | 6.5 | 10.0 | |
| Coding | 3.4 | 10.0 | |
| Combined | 10.0 | 10.0 | |
| Data parsing and extraction | 10.0 | 10.0 | |
| Domain specific | 4.1 | 4.4 | |
| General Intelligence | 10.0 | 10.0 | |
| Instructions following | 6.5 | 10.0 | |
| Puzzle Solving | 7.7 | 10.0 | |
| Tool Calling | 10.0 | 10.0 | |
| Trivia | 3.0 | 10.0 |