Claude Haiku 4.5
by Anthropic
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Clau
Models
Claude Haiku 4.5
Added 10 July 2026
Overview
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance...
Best for
Best for
Cheap fast steps in multi-model agent pipelines
Use cases
- classification
- draft PRs
- triage
- tool-routing
How to use / API access
Call via OpenRouter with model id `anthropic/claude-haiku-4.5`.
- openrouter ·
anthropic/claude-haiku-4.5Docs
OpenRouter id: anthropic/claude-haiku-4.5
Benchmarks
- Intelligence Index (artificial-analysis): 16.9 index
- Coding Index (artificial-analysis): 43.9 index
- Agentic Index (artificial-analysis): 8 index
- Design Arena 3d (other): 1073 elo · #99
- Design Arena asciiart (other): 1142 elo · #49
- Design Arena codecategories (other): 1116 elo · #97
- Design Arena dataviz (other): 1124 elo · #92
Enterprise DNA angle
Omni defaults bulk steps to Haiku-class models and escalates only when eval gates fail.
Notes
Claude Haiku 4.5 is listed in the EDNA Models directory from the OpenRouter catalogue.
Pros
- Fast and cheap for high-volume agent steps
- Good enough coding for drafts and simple refactors
- Vision support without frontier pricing
Cons
- Trails Sonnet/Opus on hard reasoning
- Closed weights
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