Fast and efficient with near-frontier intelligence.
OpenAI's most powerful reasoning model — top across math, coding, and science.
No shared demos for these models yet.
No captured outputs for these models yet.
Based on the Capability Index, o3 scores higher (79.2 vs 75.3). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Claude Haiku 4.5 has a lower blended cost. Claude Haiku 4.5: $1.00 input / $5.00 output. o3: $2.00 input / $8.00 output.
Claude Haiku 4.5 has a larger context window: Claude Haiku 4.5 supports 200K tokens vs o3 at 200K tokens.
Yes, both Claude Haiku 4.5 and o3 support vision/image input.
Claude Haiku 4.5 and o3 have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.
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 o3 for free on idapt.app to see which performs better for your specific needs.