Compare models
Put models side by side on price, context, capabilities, and benchmarks.
GPT-5.5 Pro is the extended-reasoning tier of GPT-5.5 for the hardest coding, research, and analytical tasks. This is the batch variant for cheaper asynchronous processing.
Claude Haiku 4.5 is Anthropic's fast, affordable small model in the Claude 4 generation, balancing strong instruction-following and coding ability with low latency. It is designed for high-throughput agentic and chat applications where speed and cost efficiency are priorities.
Benchmarks
Head-to-head scores across reasoning, coding, and agentic indices, plus per-domain rankings.