Anthropic's most capable Opus yet, built for long-horizon autonomous agents and frontier coding.
Cost-efficient reasoning model for STEM tasks.
No shared demos for these models yet.
No captured outputs for these models yet.
Both Claude Opus 4.8 and o3-mini 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.
o3-mini has a lower blended cost. Claude Opus 4.8: $5.00 input / $25.00 output. o3-mini: $1.10 input / $4.40 output.
Claude Opus 4.8 has a larger context window: Claude Opus 4.8 supports 1M tokens vs o3-mini at 200K tokens.
Claude Opus 4.8 supports vision/image input, but o3-mini does not.
Key differences: o3-mini is significantly cheaper; only Claude Opus 4.8 supports vision input. 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 o3-mini for free on idapt.app to see which performs better for your specific needs.