Model Comparison

Claude 3.5 Sonnet vs Gemini 2.5 Flash-LiteWhich is better in 2026?

Claude 3.5 Sonnet shows notably better performance in the majority of benchmarks. Gemini 2.5 Flash-Lite is 34.3x cheaper per token.

Verdict: Claude 3.5 Sonnet vs Gemini 2.5 Flash-Lite — which is better?

Claude 3.5 Sonnet (by Anthropic) and Gemini 2.5 Flash-Lite (by Google) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Claude 3.5 Sonnet outperforms in 2 benchmarks (GPQA, SWE-Bench Verified), while Gemini 2.5 Flash-Lite is better at 1 benchmark (MMMU). Claude 3.5 Sonnet shows notably better performance in the majority of benchmarks.

On price, Gemini 2.5 Flash-Lite is roughly 34.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 2.5 Flash-Lite also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude 3.5 Sonnet if…

  • you want the strongest raw capability — it leads on 2 of 3 shared benchmarks

Choose Gemini 2.5 Flash-Lite if…

  • cost matters — it's about 34.3x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Jun 2025
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Claude 3.5 Sonnet outperforms in 2 benchmarks (GPQA, SWE-Bench Verified), while Gemini 2.5 Flash-Lite is better at 1 benchmark (MMMU).

Claude 3.5 Sonnet shows notably better performance in the majority of benchmarks.

Mon Jul 27 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 2.5 Flash-Lite costs less

For input processing, Claude 3.5 Sonnet ($3.00/1M tokens) is 30.0x more expensive than Gemini 2.5 Flash-Lite ($0.10/1M tokens).

For output processing, Claude 3.5 Sonnet ($15.00/1M tokens) is 37.5x more expensive than Gemini 2.5 Flash-Lite ($0.40/1M tokens).

In conclusion, Claude 3.5 Sonnet is more expensive than Gemini 2.5 Flash-Lite.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Mon Jul 27 2026 • llm-stats.com
Anthropic
Claude 3.5 Sonnet
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
Google
Gemini 2.5 Flash-Lite
Input tokens$0.10
Output tokens$0.40
Best providerGoogle
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 2.5 Flash-Lite accepts 1,048,576 input tokens compared to Claude 3.5 Sonnet's 200,000 tokens. Claude 3.5 Sonnet can generate longer responses up to 200,000 tokens, while Gemini 2.5 Flash-Lite is limited to 65,536 tokens.

Anthropic
Claude 3.5 Sonnet
Input200,000 tokens
Output200,000 tokens
Google
Gemini 2.5 Flash-Lite
Input1,048,576 tokens
Output65,536 tokens
Mon Jul 27 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3.5 Sonnet and Gemini 2.5 Flash-Lite support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude 3.5 Sonnet

Text
Images
Audio
Video

Gemini 2.5 Flash-Lite

Text
Images
Audio
Video

License

Usage and distribution terms

Claude 3.5 Sonnet is licensed under a proprietary license, while Gemini 2.5 Flash-Lite uses Creative Commons Attribution 4.0 License.

License differences may affect how you can use these models in commercial or open-source projects.

Claude 3.5 Sonnet

Proprietary

Closed source

Gemini 2.5 Flash-Lite

Creative Commons Attribution 4.0 License

Open weights

Release Timeline

When each model was launched

Claude 3.5 Sonnet was released on 2024-10-22, while Gemini 2.5 Flash-Lite was released on 2025-06-17.

Gemini 2.5 Flash-Lite is 8 months newer than Claude 3.5 Sonnet.

Claude 3.5 Sonnet

Oct 22, 2024

1.8 years ago

Gemini 2.5 Flash-Lite

Jun 17, 2025

1.1 years ago

7mo newer

Knowledge Cutoff

When training data ends

Gemini 2.5 Flash-Lite has a documented knowledge cutoff of 2025-01-01, while Claude 3.5 Sonnet's cutoff date is not specified.

We can confirm Gemini 2.5 Flash-Lite's training data extends to 2025-01-01, but cannot make a direct comparison without Claude 3.5 Sonnet's cutoff date.

Claude 3.5 Sonnet

—

Gemini 2.5 Flash-Lite

Jan 2025

Provider Availability

Claude 3.5 Sonnet is available from Anthropic, Bedrock, Google. Gemini 2.5 Flash-Lite is available from Google.

Claude 3.5 Sonnet

anthropic logo
Anthropic
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
google logo
Google
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Gemini 2.5 Flash-Lite

google logo
Google
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Anthropic
Higher GPQA score (67.2% vs 64.6%)
Higher SWE-Bench Verified score (49.0% vs 31.6%)
Google
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
Has open weights
Higher MMMU score (72.9% vs 68.3%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude 3.5 Sonnet and Gemini 2.5 Flash-Lite side-by-side, then vote on the output you prefer.

Claude 3.5 Sonnet
✓ Preferred
Gemini 2.5 Flash-Lite
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude 3.5 Sonnet
Google
Gemini 2.5 Flash-Lite

FAQ

Common questions about Claude 3.5 Sonnet vs Gemini 2.5 Flash-Lite.

Which is better, Claude 3.5 Sonnet or Gemini 2.5 Flash-Lite?

Claude 3.5 Sonnet shows notably better performance in the majority of benchmarks. Claude 3.5 Sonnet is made by Anthropic and Gemini 2.5 Flash-Lite is made by Google. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude 3.5 Sonnet compare to Gemini 2.5 Flash-Lite in benchmarks?

Claude 3.5 Sonnet scores GSM8k: 96.4%, DocVQA: 95.2%, AI2D: 94.7%, HumanEval: 93.7%, BIG-Bench Hard: 93.1%. Gemini 2.5 Flash-Lite scores FACTS Grounding: 84.1%, Global-MMLU-Lite: 81.1%, MMMU: 72.9%, GPQA: 64.6%, Vibe-Eval: 51.3%.

Is Claude 3.5 Sonnet cheaper than Gemini 2.5 Flash-Lite?

Gemini 2.5 Flash-Lite is 30.0x cheaper for input tokens. Claude 3.5 Sonnet costs $3.00/M input and $15.00/M output via anthropic. Gemini 2.5 Flash-Lite costs $0.10/M input and $0.40/M output via google.

What are the context window sizes for Claude 3.5 Sonnet and Gemini 2.5 Flash-Lite?

Claude 3.5 Sonnet supports 200K tokens and Gemini 2.5 Flash-Lite supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude 3.5 Sonnet and Gemini 2.5 Flash-Lite?

Key differences include context window (200K vs 1.0M), input pricing ($3.00 vs $0.10/M), licensing (Proprietary vs Creative Commons Attribution 4.0 License). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3.5 Sonnet and Gemini 2.5 Flash-Lite?

Claude 3.5 Sonnet is developed by Anthropic and Gemini 2.5 Flash-Lite is developed by Google.

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