Claude Opus 4.5 vs Gemini 2.5 Flash-Lite Comparison

Comparing Claude Opus 4.5 and Gemini 2.5 Flash-Lite across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Claude Opus 4.5 outperforms in 2 benchmarks (GPQA, SWE-Bench Verified), while Gemini 2.5 Flash-Lite is better at 0 benchmarks.

Claude Opus 4.5 significantly outperforms across most benchmarks.

Tue Mar 17 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 4.5 ($5.00/1M tokens) is 50.0x more expensive than Gemini 2.5 Flash-Lite ($0.10/1M tokens).

For output processing, Claude Opus 4.5 ($25.00/1M tokens) is 62.5x more expensive than Gemini 2.5 Flash-Lite ($0.40/1M tokens).

In conclusion, Claude Opus 4.5 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

Tue Mar 17 2026 • llm-stats.com

Claude Opus 4.5

Input tokens$5.00

Output tokens$25.00

Best providerAnthropic

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 4.5's 200,000 tokens. Gemini 2.5 Flash-Lite can generate longer responses up to 65,536 tokens, while Claude Opus 4.5 is limited to 64,000 tokens.

Claude Opus 4.5

Input200,000 tokens

Output64,000 tokens

Gemini 2.5 Flash-Lite

Input1,048,576 tokens

Output65,536 tokens

Tue Mar 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.5 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 4.5

Text

Images

Audio

Video

Gemini 2.5 Flash-Lite

Text

Images

Audio

Video

License

Usage and distribution terms

Claude Opus 4.5 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 4.5

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 4.5 was released on 2025-11-24, while Gemini 2.5 Flash-Lite was released on 2025-06-17.

Claude Opus 4.5 is 5 months newer than Gemini 2.5 Flash-Lite.

Claude Opus 4.5

Nov 24, 2025

3 months ago

5mo newer

Gemini 2.5 Flash-Lite

Jun 17, 2025

9 months ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a knowledge cutoff of 2025-03-31, while Gemini 2.5 Flash-Lite has a cutoff of 2025-01-01.

Claude Opus 4.5 has more recent training data (up to 2025-03-31), making it potentially better informed about events through that date compared to Gemini 2.5 Flash-Lite (2025-01-01).

Claude Opus 4.5

Mar 2025

2 mo newer

Gemini 2.5 Flash-Lite

Jan 2025

Provider Availability

Claude Opus 4.5 is available from Anthropic. Gemini 2.5 Flash-Lite is available from Google. The availability of providers can affect quality of the model and reliability.