Cost-efficient reasoning model for STEM tasks.
Anthropic's Mythos-class flagship for ambitious, long-running professional work.
No shared agent demos for these models yet.
No captured outputs for these models yet.
This model hasn't been benchmarked yet.
Both o3-mini and Claude Fable 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.
o3-mini has a lower blended cost. o3-mini: $1.10 input / $4.40 output. Claude Fable 5: $10.00 input / $50.00 output.
Claude Fable 5 has a larger context window: o3-mini supports 200K tokens vs Claude Fable 5 at 1M tokens.
Claude Fable 5 supports vision/image input, but o3-mini does not.
Key differences: o3-mini is significantly cheaper; only Claude Fable 5 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 o3-mini and Claude Fable 5 for free on idapt.app to see which performs better for your specific needs.