Claude Haiku 5.5 vs Claude Opus 5.5

Claude Haiku 5.5 leads on 1 of 1 benchmarks where both are measured. Specs, per-token pricing, and live benchmark scores — refreshed daily from our benchmark database.

Specs & pricing

Claude Haiku 5.5Claude Opus 5.5
CompanyAnthropicAnthropic
ReleasedOct 2026Sep 2026
Context window1.0M1.0M
Input /1M tokens$0.1$4
Output /1M tokens$0.5$20
Open weightsNoNo

Benchmarks

BenchmarkClaude Haiku 5.5Claude Opus 5.5
Speed (tok/s)235 tok/s97 tok/s

Scores come from published leaderboards and official model cards (sources listed on the benchmarks page) and refresh daily. Pricing via vendor pages and OpenRouter.