Claude Haiku 4.5 vs GPT 5.5 Pro
Fast and efficient with near-frontier intelligence.
OpenAI's high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads.
No captured outputs for these models yet.
Frequently Asked Questions: Claude Haiku 4.5 vs GPT 5.5 Pro▼
Which is better, Claude Haiku 4.5 or GPT 5.5 Pro?
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Based on the Capability Index, GPT 5.5 Pro scores higher (91.8 vs 75.3). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Which is cheaper, Claude Haiku 4.5 or GPT 5.5 Pro?
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Claude Haiku 4.5 has a lower blended cost. Claude Haiku 4.5: $1.00 input / $5.00 output. GPT 5.5 Pro: $30.00 input / $180.00 output.
Which has a larger context window, Claude Haiku 4.5 or GPT 5.5 Pro?
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GPT 5.5 Pro has a larger context window: Claude Haiku 4.5 supports 200K tokens vs GPT 5.5 Pro at 1.1M tokens.
Do both Claude Haiku 4.5 and GPT 5.5 Pro support vision?
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Yes, both Claude Haiku 4.5 and GPT 5.5 Pro support vision/image input.
What are the key differences between Claude Haiku 4.5 and GPT 5.5 Pro?
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Key differences: GPT 5.5 Pro has a notably higher capability index (16.5 point gap); Claude Haiku 4.5 is significantly cheaper. Compare full specs on this page.
Which model should I choose for my use case?
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If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Claude Haiku 4.5 and GPT 5.5 Pro for free on idapt.app to see which performs better for your specific needs.