Model decision surface
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Start with Claude Fable 5.1 and Claude Haiku 4.5, or choose any two current ranked language models. Compare capability evidence, price, context, provider availability, and weight access without pretending one field decides every use case.
Current public data
Claude Fable 5.1 vs Claude Haiku 4.5
Live dataset updated 9/3/2026, 5:19:04 AM UTC
Open 1200×630 evidence receipt| Field | Claude Fable 5.1 Anthropic | Claude Haiku 4.5 Anthropic |
|---|---|---|
| ModelCap position | #2 | #45 |
| Index score | 84.1 | 52.4 |
| Evidence | Measured2 public benchmark observations across 2 boards | Measured3 public benchmark observations across 3 boards |
| Input / 1M | $10.00 | $1.00 |
| Output / 1M | $50.00 | $5.00 |
| Pricing status | fresh | fresh |
| Context | 1M | 200K |
| Providers | 4 | 4 |
| Weight access | API only | API only |
Decision facts
- Claude Fable 5.1 is #2; Claude Haiku 4.5 is #45 on the same current language board.
- Index scores are 84.1 for Claude Fable 5.1 and 52.4 for Claude Haiku 4.5.
- Both positions use Measured evidence.
- Listed output price per 1M tokens is $50.00 for Claude Fable 5.1 and $5.00 for Claude Haiku 4.5.
- Published context is 1,000,000 tokens for Claude Fable 5.1 and 200,000 for Claude Haiku 4.5.
These are separate published fields, not a synthetic winner. ModelCap does not collapse price, access, context, and capability evidence into a hidden recommendation score.
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Each comparison page is a permanent, shareable URL with the same live figures as this tool: ModelCap Index position, API pricing, context window, provider count, weight access and every shared benchmark board.