Claude Opus 4 vs Gemini 2.0 Flash

Performance benchmarks + pricing comparison — updated April 2026

Claude Opus 4

Anthropic

Anthropic's most powerful model. Best for complex reasoning and challenging coding tasks.

Input$15.00/M
Output$75.00/M
Context200K tokens
Best ForComplex architecture decisions, debugging hard bugs, research
Benchmark86/100

Gemini 2.0 Flash

Google

Cheapest Google model. Fast responses for simple coding tasks.

Input$0.100/M
Output$0.400/M
Context1M tokens
Best ForSimple tasks, fast responses, cost optimization

Cost Comparison by Scenario

Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.

ScenarioClaude Opus 4Gemini 2.0 FlashSavings
Small Script (1K lines) $3.08 $0.02 Gemini 2.0 Flash saves $3.06 (99%)
Medium Feature (10K lines) $23.29 $0.12 Gemini 2.0 Flash saves $23.17 (100%)
Large Project (50K lines) $116.44 $0.58 Gemini 2.0 Flash saves $115.86 (100%)
Code Review (5K lines) $6.02 $0.03 Gemini 2.0 Flash saves $5.99 (100%)

Verdict

Gemini 2.0 Flash wins on both price and performance — $0.100/M input with a benchmark score of N/A/100.

For most developers, this is the clear choice between these two models.

Compare with Other Models