Anthropic's most capable Opus yet, built for long-horizon autonomous agents and frontier coding.
OpenAI's original frontier reasoning model with deep thinking.
No shared demos for these models yet.
No captured outputs for these models yet.
Based on the Capability Index, Claude Opus 4.8 scores higher (89.2 vs 75.2). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Claude Opus 4.8 has a lower blended cost. Claude Opus 4.8: $5.00 input / $25.00 output. o1: $15.00 input / $60.00 output.
Claude Opus 4.8 has a larger context window: Claude Opus 4.8 supports 1M tokens vs o1 at 200K tokens.
Yes, both Claude Opus 4.8 and o1 support vision/image input.
Key differences: Claude Opus 4.8 has a notably higher capability index (14.0 point gap); Claude Opus 4.8 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 Claude Opus 4.8 and o1 for free on idapt.app to see which performs better for your specific needs.