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Gemini 3.1 Flash Lite vs Claude Fable 5.1

At a glance

Google's high-efficiency model for high-volume use cases at half the cost of Gemini 3 Flash.

771.0M ctx$0.25/$1.50 per M#37/92

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
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:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper97%
Capability
CapabilityECI76.7
Reasoning & Knowledge
Expert-Level8.6%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Capability
Capability—
Reasoning & Knowledge
Expert-Level—
Specs
1.0M
Context
66K
Max output
Mar 2026
Released
1M
Context
128K
Max output
Sep 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input98%$0.25/M tokens
Output97%$1.50/M tokens
Reasoning$1.50/M tokens
Cache read90%$0.02/M tokens
Cache write99%$0.08/M tokens
Image input$0.25/M tokens
Audio input$0.50/M tokens
Web search$0.01/search
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
Chat with Gemini 3.1 Flash LiteGo to model
Chat with Claude Fable 5.1Go to model
Frequently Asked Questions: Gemini 3.1 Flash Lite vs Claude Fable 5.1▼

Which is better, Gemini 3.1 Flash Lite or Claude Fable 5.1?

▼

Both Gemini 3.1 Flash Lite and Claude Fable 5.1 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, Gemini 3.1 Flash Lite or Claude Fable 5.1?

▼

Gemini 3.1 Flash Lite has a lower blended cost. Gemini 3.1 Flash Lite: $0.25 input / $1.50 output. Claude Fable 5.1: $10.00 input / $50.00 output.

Which has a larger context window, Gemini 3.1 Flash Lite or Claude Fable 5.1?

▼

Gemini 3.1 Flash Lite has a larger context window: Gemini 3.1 Flash Lite supports 1M tokens vs Claude Fable 5.1 at 1M tokens.

Do both Gemini 3.1 Flash Lite and Claude Fable 5.1 support vision?

▼

Yes, both Gemini 3.1 Flash Lite and Claude Fable 5.1 support vision/image input.

What are the key differences between Gemini 3.1 Flash Lite and Claude Fable 5.1?

▼

Key differences: Gemini 3.1 Flash Lite 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 Gemini 3.1 Flash Lite and Claude Fable 5.1 for free on idapt.app to see which performs better for your specific needs.

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