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Gemini 2.5 Flash Lite vs Claude Opus 5.5

At a glance

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

1.0M ctx$0.10/$0.40 per M

Anthropic's new flagship for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5.

1M ctx$4.00/$20.00 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
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper98%
Reasoning & Knowledge
Graduate Science—Factual Recall—
Math
Competition Math—
Agentic
Novel Reasoning—
Reasoning
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-10-02
Reasoning & Knowledge
Graduate Science90.6%Factual Recall72.2%
Math
Competition Math100.0%
Agentic
Novel Reasoning92.5%
Specs
1.0M
Context
66K
Max output
Jul 2025
Released
1M
Context
128K
Max output
Sep 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input98%$0.10/M tokens
Output98%$0.40/M tokens
Reasoning$0.40/M tokens
Cache read95%$0.01/M tokens
Cache write98%$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$4.00/M tokens
Output$20.00/M tokens
Cache read$0.20/M tokens
Cache write$5.00/M tokens
Web search29%$0.01/search
Chat with Gemini 2.5 Flash LiteGo to model
Chat with Claude Opus 5.5Go to model
Frequently Asked Questions: Gemini 2.5 Flash Lite vs Claude Opus 5.5▼

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

▼

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

▼

Gemini 2.5 Flash Lite has a lower blended cost. Gemini 2.5 Flash Lite: $0.10 input / $0.40 output. Claude Opus 5.5: $4.00 input / $20.00 output.

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

▼

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

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

▼

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

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

▼

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

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