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Grok Code Fast 1 vs Claude Fable 5

At a glance

Speedy reasoning model built for agentic coding.

Anthropic's Mythos-class flagship for ambitious, long-running professional work.

921M ctx$10.00/$50.00 per M#2/92
Agent Demos
All agent demos

No shared agent demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI· as of 2026-07-10
Capability
Capability—
Reasoning & Knowledge
Factual Recall—
Math
Competition Math—
Agentic
Terminal Tasks25.8%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI91.6
Reasoning & Knowledge
Factual Recall68.3%
Math
Competition Math99.7%
Agentic
Terminal Tasks—
Specs
—
Context
—
Max output
—
Released
1M
Context
128K
Max output
Jun 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Pricing not available
Live pricing, shown before you run
Input$10.00/M tokens
Output$50.00/M tokens
Cache read$1.00/M tokens
Cache write$12.50/M tokens
Web search$0.01/search
Chat with Grok Code Fast 1Go to model
Chat with Claude Fable 5Go to model
Frequently Asked Questions: Grok Code Fast 1 vs Claude Fable 5▼

Which is better, Grok Code Fast 1 or Claude Fable 5?

▼

Both Grok Code Fast 1 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.

Do both Grok Code Fast 1 and Claude Fable 5 support vision?

▼

Claude Fable 5 supports vision/image input, but Grok Code Fast 1 does not.

What are the key differences between Grok Code Fast 1 and Claude Fable 5?

▼

Key differences: only Claude Fable 5 supports vision input; only Claude Fable 5 offers extended reasoning mode. Compare full specs on this page.

Which model should I choose for my use case?

▼

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 Grok Code Fast 1 and Claude Fable 5 for free on idapt.app to see which performs better for your specific needs.

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