← All Models

Claude Haiku 4.5 vs GPT-5.5

Claude Haiku 4.5 leads in 5 of 8 categories

Arena ELO

Claude Haiku 4.5

Cheaper

Claude Haiku 4.5

Faster

Claude Haiku 4.5

Detailed Comparison

CategoryClaude Haiku 4.5GPT-5.5
ProviderAnthropic OpenAI
Context Window200K WIN128K
Input Price ($/1M)$0.8 WIN$5
Output Price ($/1M)$4 WIN$30
Arena ELO1290 WINN/A
Codingunknown N/A
Reasoningunknown N/A
Speed (tokens/sec)~120 t/s WINN/A
Open SourceNo No

Frequently Asked Questions

Which is cheaper, Claude Haiku 4.5 or GPT-5.5?

Claude Haiku 4.5 is approximately 86% cheaper than GPT-5.5 per million tokens.

Which is better for coding, Claude Haiku 4.5 or GPT-5.5?

Claude Haiku 4.5 scores unknown on coding benchmarks, while GPT-5.5 scores N/A.

Which has a larger context window?

Claude Haiku 4.5 supports 200K context, while GPT-5.5 supports 128K.

Is Claude Haiku 4.5 or GPT-5.5 open source?

Claude Haiku 4.5 is proprietary. GPT-5.5 is proprietary.

Related Articles

Anthropic extends Claude Fable access after GPT-5.6

Claude's J-space is not consciousness, but it matters

Claude Code MCP setup that connects real tools

Claude Reflect turns usage into retention

Claude Code’s backdoor scare points to 4 real risks

Anthropic’s Claude Skills define the new agent toolkit

More Comparisons

Claude Haiku 4.5 vs Claude Opus 4.5Claude Haiku 4.5 vs Llama 4 ScoutClaude Haiku 4.5 vs Claude Sonnet 4.6Claude Haiku 4.5 vs Qwen 3.6Claude Haiku 4.5 vs Claude Fable 5Claude Haiku 4.5 vs Kimi K2.7 CodeClaude Haiku 4.5 vs DeepSeek V4 FlashClaude Haiku 4.5 vs GPT-5.6 LunaGPT-5.5 vs Claude Opus 4.5GPT-5.5 vs Llama 4 ScoutGPT-5.5 vs Claude Sonnet 4.6GPT-5.5 vs Qwen 3.6GPT-5.5 vs Claude Fable 5GPT-5.5 vs Kimi K2.7 CodeGPT-5.5 vs DeepSeek V4 FlashGPT-5.5 vs GPT-5.6 Luna