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Gemini 2.5 Flash Lite (09-2025) vs Claude Fable 5.1

At a glance

Earlier Gemini 2.5 Flash Lite preview from September 2025.

1.0M ctx$0.10/$0.40 per M

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:OpenRouter
Cheaper99%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Specs
1.0M
Context
66K
Max output
Sep 2025
Released
1M
Context
128K
Max output
Sep 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input99%$0.10/M tokens
Output99%$0.40/M tokens
Reasoning$0.40/M tokens
Cache read96%$0.01/M tokens
Cache write99%$0.08/M tokens
Image input$0.10/M tokens
Audio input$0.30/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 2.5 Flash Lite (09-2025)Go to model
Chat with Claude Fable 5.1Go to model
Frequently Asked Questions: Gemini 2.5 Flash Lite (09-2025) vs Claude Fable 5.1▼

Which is better, Gemini 2.5 Flash Lite (09-2025) or Claude Fable 5.1?

▼

Both Gemini 2.5 Flash Lite (09-2025) 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 2.5 Flash Lite (09-2025) or Claude Fable 5.1?

▼

Gemini 2.5 Flash Lite (09-2025) has a lower blended cost. Gemini 2.5 Flash Lite (09-2025): $0.10 input / $0.40 output. Claude Fable 5.1: $10.00 input / $50.00 output.

Which has a larger context window, Gemini 2.5 Flash Lite (09-2025) or Claude Fable 5.1?

▼

Gemini 2.5 Flash Lite (09-2025) has a larger context window: Gemini 2.5 Flash Lite (09-2025) supports 1M tokens vs Claude Fable 5.1 at 1M tokens.

Do both Gemini 2.5 Flash Lite (09-2025) and Claude Fable 5.1 support vision?

▼

Yes, both Gemini 2.5 Flash Lite (09-2025) and Claude Fable 5.1 support vision/image input.

What are the key differences between Gemini 2.5 Flash Lite (09-2025) and Claude Fable 5.1?

▼

Key differences: Gemini 2.5 Flash Lite (09-2025) 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 2.5 Flash Lite (09-2025) and Claude Fable 5.1 for free on idapt.app to see which performs better for your specific needs.

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