Anthropic's Mythos-class flagship for ambitious, long-running professional work.
NVIDIA's open frontier reasoning model for orchestration, coding, and deep research.
No shared agent demos for these models yet.
No captured outputs for these models yet.
This model hasn't been benchmarked yet.
Both Claude Fable 5 and Nemotron 3 Ultra 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.
Nemotron 3 Ultra has a lower blended cost. Claude Fable 5: $10.00 input / $50.00 output. Nemotron 3 Ultra: $0.60 input / $3.60 output.
Claude Fable 5 has a larger context window: Claude Fable 5 supports 1M tokens vs Nemotron 3 Ultra at 512K tokens.
Claude Fable 5 supports vision/image input, but Nemotron 3 Ultra does not.
Key differences: Nemotron 3 Ultra 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 Claude Fable 5 and Nemotron 3 Ultra for free on idapt.app to see which performs better for your specific needs.