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Claude Fable 5.1 vs Gemini 2.5 Pro (05-06)

At a glance

Anthropic's upgraded Mythos-class flagship, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work.

1M ctx$10.00/$50.00 per M

Earlier Gemini 2.5 Pro preview release from May 2025.

751.0M ctx$1.25/$10.00 per M#41/92
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Capability
Capability—
Reasoning & Knowledge
Graduate Science—Expert-Level—
Math
Math Problems—
Coding
Code Editing—
Reasoning
CodingInsufficient data
AgenticInsufficient data
MathInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper83%
Capability
CapabilityECI75.3
Reasoning & Knowledge
Graduate Science66.7%Expert-Level17.8%
Math
Math Problems95.9%
Coding
Code Editing76.9%
Specs
1M
Context
128K
Max output
Sep 2026
Released
1.0M
Context
66K
Max output
May 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$10.00/M tokens
Output$50.00/M tokens
Cache read$0.25/M tokens
Cache write$12.50/M tokens
Web search29%$0.01/search
Live pricing, shown before you run
Input88%$1.25/M tokens
Output80%$10.00/M tokens
Reasoning$10.00/M tokens
Cache read50%$0.13/M tokens
Cache write97%$0.38/M tokens
Image input$1.25/M tokens
Audio input$1.25/M tokens
Web search$0.01/search
Chat with Claude Fable 5.1Go to model
Chat with Gemini 2.5 Pro (05-06)Go to model
Frequently Asked Questions: Claude Fable 5.1 vs Gemini 2.5 Pro (05-06)▼

Which is better, Claude Fable 5.1 or Gemini 2.5 Pro (05-06)?

▼

Both Claude Fable 5.1 and Gemini 2.5 Pro (05-06) 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.

Which is cheaper, Claude Fable 5.1 or Gemini 2.5 Pro (05-06)?

▼

Gemini 2.5 Pro (05-06) has a lower blended cost. Claude Fable 5.1: $10.00 input / $50.00 output. Gemini 2.5 Pro (05-06): $1.25 input / $10.00 output.

Which has a larger context window, Claude Fable 5.1 or Gemini 2.5 Pro (05-06)?

▼

Gemini 2.5 Pro (05-06) has a larger context window: Claude Fable 5.1 supports 1M tokens vs Gemini 2.5 Pro (05-06) at 1M tokens.

Do both Claude Fable 5.1 and Gemini 2.5 Pro (05-06) support vision?

▼

Yes, both Claude Fable 5.1 and Gemini 2.5 Pro (05-06) support vision/image input.

What are the key differences between Claude Fable 5.1 and Gemini 2.5 Pro (05-06)?

▼

Key differences: Gemini 2.5 Pro (05-06) is significantly cheaper. 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 Claude Fable 5.1 and Gemini 2.5 Pro (05-06) for free on idapt.app to see which performs better for your specific needs.

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