Comprehensive side-by-side LLM comparison
Claude Opus 4 leads with 4.1% higher average benchmark score. Gemini 2.5 Flash offers 786.1K more tokens in context window than Claude Opus 4. Gemini 2.5 Flash is $87.20 cheaper per million tokens. Claude Opus 4 is available on 4 providers. Both models have their strengths depending on your specific coding needs.
Anthropic
Claude Opus 4 was developed as the flagship model in the Claude 4 generation, designed to push the boundaries of AI capability in complex reasoning, analysis, and multi-step problem-solving. Built to handle the most demanding enterprise tasks, it represents Anthropic's highest tier of intelligence and capability.
Gemini 2.5 Flash represents a continued evolution of Google's efficient multimodal models, designed to deliver enhanced capabilities while maintaining the performance characteristics valued in the Flash series. Built to serve high-throughput applications with improved quality, it advances the balance between speed and intelligence.
2 days newer

Gemini 2.5 Flash
2025-05-20

Claude Opus 4
Anthropic
2025-05-22
Cost per million tokens (USD)

Claude Opus 4

Gemini 2.5 Flash
Context window and performance specifications
Average performance across 3 common benchmarks

Claude Opus 4

Gemini 2.5 Flash
Performance comparison across key benchmark categories

Claude Opus 4

Gemini 2.5 Flash
Gemini 2.5 Flash
2025-01-31
Available providers and their performance metrics

Claude Opus 4
Anthropic
Bedrock
ZeroEval

Claude Opus 4

Gemini 2.5 Flash

Claude Opus 4

Gemini 2.5 Flash

Gemini 2.5 Flash
ZeroEval