Anthropic's upgraded Mythos-class flagship, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work.
Meta's multimodal reasoning model for complex agentic tasks.
No shared demos for these models yet.
No captured outputs for these models yet.
Both Claude Fable 5.1 and Muse Spark 1.2 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.
Muse Spark 1.2 has a lower blended cost. Claude Fable 5.1: $10.00 input / $50.00 output. Muse Spark 1.2: $1.25 input / $4.25 output.
Muse Spark 1.2 has a larger context window: Claude Fable 5.1 supports 1M tokens vs Muse Spark 1.2 at 1M tokens.
Yes, both Claude Fable 5.1 and Muse Spark 1.2 support vision/image input.
Key differences: Muse Spark 1.2 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 5.1 and Muse Spark 1.2 for free on idapt.app to see which performs better for your specific needs.