Claude Opus 4.5 vs Gemini 3 Pro Comparison

Comparing Claude Opus 4.5 and Gemini 3 Pro across benchmarks, pricing, and capabilities.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Claude Opus 4.5 outperforms in 3 benchmarks (ARC-AGI v2, SWE-Bench Verified, Terminal-Bench 2.0), while Gemini 3 Pro is better at 2 benchmarks (GPQA, MMMLU).

Claude Opus 4.5 has a slight edge in benchmark performance.

Fri Mar 20 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 3 Pro costs less

For input processing, Claude Opus 4.5 ($5.00/1M tokens) is 2.5x more expensive than Gemini 3 Pro ($2.00/1M tokens).

For output processing, Claude Opus 4.5 ($25.00/1M tokens) is 2.1x more expensive than Gemini 3 Pro ($12.00/1M tokens).

In conclusion, Claude Opus 4.5 is more expensive than Gemini 3 Pro.*

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

Lowest available price from all providers

Fri Mar 20 2026 • llm-stats.com

Claude Opus 4.5

Input tokens$5.00

Output tokens$25.00

Best providerAnthropic

Gemini 3 Pro

Input tokens$2.00

Output tokens$12.00

Best providerGoogle

Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3 Pro accepts 1,048,576 input tokens compared to Claude Opus 4.5's 200,000 tokens. Gemini 3 Pro 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 3 Pro

Input1,048,576 tokens

Output65,536 tokens

Fri Mar 20 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.5 and Gemini 3 Pro 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 3 Pro

Text

Images

Audio

Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude Opus 4.5

Proprietary

Closed source

Gemini 3 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while Gemini 3 Pro was released on 2025-11-18.

Claude Opus 4.5 is 0 month newer than Gemini 3 Pro.

Claude Opus 4.5

Nov 24, 2025

3 months ago

6d newer

Gemini 3 Pro

Nov 18, 2025

4 months ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a knowledge cutoff of 2025-03-31, while Gemini 3 Pro has a cutoff of 2025-01-31.

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 3 Pro (2025-01-31).

Claude Opus 4.5

Mar 2025

2 mo newer

Gemini 3 Pro

Jan 2025

Provider Availability

Claude Opus 4.5 is available from Anthropic. Gemini 3 Pro is available from Google. The availability of providers can affect quality of the model and reliability.