OpenAI's most powerful reasoning model — top across math, coding, and science.
Anthropic's fast, low-cost Claude Haiku for high-volume work, succeeding Claude Haiku 4.5.
No shared demos for these models yet.
No captured outputs for these models yet.
Both o3 and Claude Haiku 5.5 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.
Claude Haiku 5.5 has a lower blended cost. o3: $2.00 input / $8.00 output. Claude Haiku 5.5: $0.10 input / $0.50 output.
Claude Haiku 5.5 has a larger context window: o3 supports 200K tokens vs Claude Haiku 5.5 at 1M tokens.
Yes, both o3 and Claude Haiku 5.5 support vision/image input.
Key differences: Claude Haiku 5.5 is significantly cheaper. Compare full specs on this page.
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 o3 and Claude Haiku 5.5 for free on idapt.app to see which performs better for your specific needs.