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Claude Sonnet 5.5 vs Gemini 2.5 Flash Lite

At a glance

Anthropic's Sonnet-class model for well-scoped everyday work, a direct upgrade over Claude Sonnet 5.

1M ctx$2.00/$10.00 per M

Ultra-fast and cost-efficient for high-throughput tasks.

1.0M ctx$0.10/$0.40 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
Sources:Epoch AI·OpenRouter· as of 2026-10-02
Reasoning & Knowledge
Graduate Science95.6%Factual Recall46.5%
Math
Competition Math100.0%
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper96%
Reasoning & Knowledge
Graduate Science—Factual Recall—
Math
Competition Math—
Specs
1M
Context
128K
Max output
Sep 2026
Released
1.0M
Context
66K
Max output
Jul 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$2.00/M tokens
Output$10.00/M tokens
Cache read$0.20/M tokens
Cache write$2.50/M tokens
Web search29%$0.01/search
Live pricing, shown before you run
Input95%$0.10/M tokens
Output96%$0.40/M tokens
Reasoning$0.40/M tokens
Cache read95%$0.01/M tokens
Cache write97%$0.08/M tokens
Image input$0.10/M tokens
Audio input$0.30/M tokens
Web search$0.01/search
Chat with Claude Sonnet 5.5Go to model
Chat with Gemini 2.5 Flash LiteGo to model
Frequently Asked Questions: Claude Sonnet 5.5 vs Gemini 2.5 Flash Lite▼

Which is better, Claude Sonnet 5.5 or Gemini 2.5 Flash Lite?

▼

Both Claude Sonnet 5.5 and Gemini 2.5 Flash Lite 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 Sonnet 5.5 or Gemini 2.5 Flash Lite?

▼

Gemini 2.5 Flash Lite has a lower blended cost. Claude Sonnet 5.5: $2.00 input / $10.00 output. Gemini 2.5 Flash Lite: $0.10 input / $0.40 output.

Which has a larger context window, Claude Sonnet 5.5 or Gemini 2.5 Flash Lite?

▼

Gemini 2.5 Flash Lite has a larger context window: Claude Sonnet 5.5 supports 1M tokens vs Gemini 2.5 Flash Lite at 1M tokens.

Do both Claude Sonnet 5.5 and Gemini 2.5 Flash Lite support vision?

▼

Yes, both Claude Sonnet 5.5 and Gemini 2.5 Flash Lite support vision/image input.

What are the key differences between Claude Sonnet 5.5 and Gemini 2.5 Flash Lite?

▼

Key differences: Gemini 2.5 Flash Lite is significantly cheaper; only Claude Sonnet 5.5 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 Claude Sonnet 5.5 and Gemini 2.5 Flash Lite for free on idapt.app to see which performs better for your specific needs.

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