Model Comparison

Claude Opus 4 vs Gemini 2.5 Flash-Lite

Claude Opus 4 significantly outperforms across most benchmarks. Gemini 2.5 Flash-Lite is 171.4x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Claude Opus 4 outperforms in 3 benchmarks (AIME 2025, GPQA, SWE-Bench Verified), while Gemini 2.5 Flash-Lite is better at 0 benchmarks.

Claude Opus 4 significantly outperforms across most benchmarks.

Thu Apr 30 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 Opus 4 ($15.00/1M tokens) is 150.0x more expensive than Gemini 2.5 Flash-Lite ($0.10/1M tokens).

For output processing, Claude Opus 4 ($75.00/1M tokens) is 187.5x more expensive than Gemini 2.5 Flash-Lite ($0.40/1M tokens).

In conclusion, Claude Opus 4 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
Thu Apr 30 2026 • llm-stats.com
Anthropic
Claude Opus 4
Input tokens$15.00
Output tokens$75.00
Best providerAnthropic
Google
Gemini 2.5 Flash-Lite
Input tokens$0.10
Output tokens$0.40
Best providerGoogle
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Context Window

Maximum input and output token capacity

Gemini 2.5 Flash-Lite accepts 1,048,576 input tokens compared to Claude Opus 4's 200,000 tokens. Gemini 2.5 Flash-Lite can generate longer responses up to 65,536 tokens, while Claude Opus 4 is limited to 32,000 tokens.

Anthropic
Claude Opus 4
Input200,000 tokens
Output32,000 tokens
Google
Gemini 2.5 Flash-Lite
Input1,048,576 tokens
Output65,536 tokens
Thu Apr 30 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4 and Gemini 2.5 Flash-Lite support multimodal inputs.

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

Claude Opus 4

Text
Images
Audio
Video

Gemini 2.5 Flash-Lite

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 4 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 Opus 4

Proprietary

Closed source

Gemini 2.5 Flash-Lite

Creative Commons Attribution 4.0 License

Open weights

Release Timeline

When each model was launched

Claude Opus 4 was released on 2025-05-22, while Gemini 2.5 Flash-Lite was released on 2025-06-17.

Gemini 2.5 Flash-Lite is 1 month newer than Claude Opus 4.

Claude Opus 4

May 22, 2025

11 months ago

Gemini 2.5 Flash-Lite

Jun 17, 2025

10 months ago

3w newer

Knowledge Cutoff

When training data ends

Gemini 2.5 Flash-Lite has a documented knowledge cutoff of 2025-01-01, while Claude Opus 4'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 Opus 4's cutoff date.

Claude Opus 4

—

Gemini 2.5 Flash-Lite

Jan 2025

Provider Availability

Claude Opus 4 is available from Anthropic, Bedrock, Google. Gemini 2.5 Flash-Lite is available from Google.

Claude Opus 4

anthropic logo
Anthropic
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
google logo
Google
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M

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 AIME 2025 score (75.5% vs 49.8%)
Higher GPQA score (79.6% vs 64.6%)
Higher SWE-Bench Verified score (72.5% vs 31.6%)
Google
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
Has open weights
AnthropicClaude Opus 4
GoogleGemini 2.5 Flash-Lite
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Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4
Google
Gemini 2.5 Flash-Lite

FAQ

Common questions about Claude Opus 4 vs Gemini 2.5 Flash-Lite

Claude Opus 4 significantly outperforms across most benchmarks. Claude Opus 4 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.
Claude Opus 4 scores MMMLU: 88.8%, TAU-bench Retail: 81.4%, GPQA: 79.6%, MMMU (validation): 76.5%, AIME 2025: 75.5%. 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%.
Gemini 2.5 Flash-Lite is 150.0x cheaper for input tokens. Claude Opus 4 costs $15.00/M input and $75.00/M output via anthropic. Gemini 2.5 Flash-Lite costs $0.10/M input and $0.40/M output via google.
Claude Opus 4 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.
Key differences include context window (200K vs 1.0M), input pricing ($15.00 vs $0.10/M), licensing (Proprietary vs Creative Commons Attribution 4.0 License). See the full comparison above for benchmark-by-benchmark results.
Claude Opus 4 is developed by Anthropic and Gemini 2.5 Flash-Lite is developed by Google.