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Claude Sonnet 5 vs Gemini 3.1 Flash Lite

At a glance

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

801M ctx$2.00/$10.00 per M#26/92

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
Agent Demos
All agent demos

No shared agent demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CI 72.7-84.7
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Smarter4%
Capability
CapabilityECI4%80.1
Reasoning & Knowledge
Graduate Science90.5%Expert-Level—Factual Recall25.0%
Math
Competition Math94.7%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper86%
Capability
CapabilityECI76.7
Reasoning & Knowledge
Graduate Science—Expert-Level8.6%Factual Recall—
Math
Competition Math—
Specs
1M
Context
128K
Max output
Jun 2026
Released
1.0M
Context
66K
Max output
Mar 2026
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
Input88%$0.25/M tokens
Output85%$1.50/M tokens
Reasoning$1.50/M tokens
Cache read88%$0.02/M tokens
Cache write97%$0.08/M tokens
Image input$0.25/M tokens
Audio input$0.50/M tokens
Web search$0.01/search
Chat with Claude Sonnet 5Go to model
Chat with Gemini 3.1 Flash LiteGo to model
Frequently Asked Questions: Claude Sonnet 5 vs Gemini 3.1 Flash Lite▼

Which is better, Claude Sonnet 5 or Gemini 3.1 Flash Lite?

▼

Based on the Capability Index, Claude Sonnet 5 scores higher (80.1 vs 76.7). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Claude Sonnet 5 or Gemini 3.1 Flash Lite?

▼

Gemini 3.1 Flash Lite has a lower blended cost. Claude Sonnet 5: $2.00 input / $10.00 output. Gemini 3.1 Flash Lite: $0.25 input / $1.50 output.

Which has a larger context window, Claude Sonnet 5 or Gemini 3.1 Flash Lite?

▼

Gemini 3.1 Flash Lite has a larger context window: Claude Sonnet 5 supports 1M tokens vs Gemini 3.1 Flash Lite at 1M tokens.

Do both Claude Sonnet 5 and Gemini 3.1 Flash Lite support vision?

▼

Yes, both Claude Sonnet 5 and Gemini 3.1 Flash Lite support vision/image input.

What are the key differences between Claude Sonnet 5 and Gemini 3.1 Flash Lite?

▼

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 Claude Sonnet 5 and Gemini 3.1 Flash Lite for free on idapt.app to see which performs better for your specific needs.

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