Anthropic's Mythos-class flagship for ambitious, long-running professional work.
Compact reasoning model optimized for fast, cost-efficient STEM performance.
No shared demos for these models yet.
No captured outputs for these models yet.
Both Claude Fable 5 and o4-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.
o4-mini has a lower blended cost. Claude Fable 5: $10.00 input / $50.00 output. o4-mini: $1.10 input / $4.40 output.
Claude Fable 5 has a larger context window: Claude Fable 5 supports 1M tokens vs o4-mini at 200K tokens.
Yes, both Claude Fable 5 and o4-mini support vision/image input.
Key differences: o4-mini 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 Fable 5 and o4-mini for free on idapt.app to see which performs better for your specific needs.