Model decision surface
Compare AI models
Start with Claude Fable 5.1 and Gemini 3.8 Flash, 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 Gemini 3.8 Flash
Live dataset updated 9/3/2026, 2:54:47 AM UTC
Open 1200×630 evidence receipt| Field | Claude Fable 5.1 Anthropic | Gemini 3.8 Flash |
|---|---|---|
| ModelCap position | #2 | #11 |
| Index score | 84.1 | 76.4 |
| Evidence | Measured2 public benchmark observations across 2 boards | Measured1 public benchmark observation across 1 board |
| Input / 1M | $10.00 | $0.75 |
| Output / 1M | $50.00 | $3.75 |
| Pricing status | fresh | fresh |
| Context | 1M | 1M |
| Providers | 4 | 2 |
| Weight access | API only | API only |
Decision facts
- Claude Fable 5.1 is #2; Gemini 3.8 Flash is #11 on the same current language board.
- Index scores are 84.1 for Claude Fable 5.1 and 76.4 for Gemini 3.8 Flash.
- Both positions use Measured evidence.
- Listed output price per 1M tokens is $50.00 for Claude Fable 5.1 and $3.75 for Gemini 3.8 Flash.
- Published context is 1,000,000 tokens for Claude Fable 5.1 and 1,048,576 for Gemini 3.8 Flash.
- ModelCap currently lists 4 providers for Claude Fable 5.1 and 2 for Gemini 3.8 Flash.
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.