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Gemini 2.5 Flash Lite (09-2025) vs Claude Sonnet 5

At a glance

Earlier Gemini 2.5 Flash Lite preview from September 2025.

1.0M ctx$0.10/$0.40 per M

Anthropic's fifth-generation Sonnet — near-Opus intelligence at Sonnet speed and price.

801M ctx$2.00/$10.00 per M#26/92
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
Cheaper96%
Capability
Capability—
Reasoning & Knowledge
Graduate Science—Factual Recall—
Math
Competition Math—
Reasoning
CI 72.7-84.7Provisional
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI80.1
Reasoning & Knowledge
Graduate Science90.5%Factual Recall25.0%
Math
Competition Math94.7%
Specs
1.0M
Context
66K
Max output
Sep 2025
Released
1M
Context
128K
Max output
Jun 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
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
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
Chat with Gemini 2.5 Flash Lite (09-2025)Go to model
Chat with Claude Sonnet 5Go to model
Frequently Asked Questions: Gemini 2.5 Flash Lite (09-2025) vs Claude Sonnet 5▼

Which is better, Gemini 2.5 Flash Lite (09-2025) or Claude Sonnet 5?

▼

Both Gemini 2.5 Flash Lite (09-2025) and Claude Sonnet 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.

Which is cheaper, Gemini 2.5 Flash Lite (09-2025) or Claude Sonnet 5?

▼

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 Sonnet 5: $2.00 input / $10.00 output.

Which has a larger context window, Gemini 2.5 Flash Lite (09-2025) or Claude Sonnet 5?

▼

Gemini 2.5 Flash Lite (09-2025) has a larger context window: Gemini 2.5 Flash Lite (09-2025) supports 1M tokens vs Claude Sonnet 5 at 1M tokens.

Do both Gemini 2.5 Flash Lite (09-2025) and Claude Sonnet 5 support vision?

▼

Yes, both Gemini 2.5 Flash Lite (09-2025) and Claude Sonnet 5 support vision/image input.

What are the key differences between Gemini 2.5 Flash Lite (09-2025) and Claude Sonnet 5?

▼

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 Sonnet 5 for free on idapt.app to see which performs better for your specific needs.

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