Model comparison
Claude 3 Haiku vs Claude Fable 5.1 (batch)
Price history, scores and specs for both models, line by line. Every value shows where it came from and when we last confirmed it.
Anthropic
Claude 3 Haiku
Claude 3 Haiku is Anthropic's fastest and most compact model for near-instant responsiveness. Quick and accurate targeted performance.
Anthropic
Claude Fable 5.1 (batch)
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors.
Scores
Benchmarks, with source and date
| Measure | Claude 3 Haiku | Claude Fable 5.1 (batch) |
|---|---|---|
| Artificial Analysis Intelligence Index | 5.6 | Not checked yet |
| LMArena text rating (Elo) | 1,195 | Not checked yet |
| LMArena vision rating (Elo) | 950 | Not checked yet |
Usage
How much each one is used
| Measure | Claude 3 Haiku | Claude Fable 5.1 (batch) |
|---|---|---|
| Tokens served on OpenRouter in a day | 3.9M (for 26 Sept 2026) | Not checked yet |
| Requests on OpenRouter in a day | 1.1K (for 26 Sept 2026) | Not checked yet |
| Tool calls on OpenRouter in a day | 81 (for 26 Sept 2026) | Not checked yet |
- Claude 3 Haiku
- Claude Fable 5.1 (batch) No usage checked yet
How this works
One link, either order
This link stays the same whichever order you name the two models in, so you can share it as it is. A line appears only when at least one model has a value we confirmed from a source; values we have not confirmed are left out, never guessed. To add a third record of any type, use the open comparison. Read how we check facts.