Last updated: April 5, 2026 · Reviewed by Daniel Ashford
Claude Sonnet 4 vs ⚡Gemini 2.5 Flash
Head-to-head across 6 dimensions · by Daniel Ashford
Summary
Claude Sonnet 4 leads overall with an Index of 93.2 vs 82.5. Claude Sonnet 4 wins on accuracy, reasoning, safety, coding, creativity, instruction. On pricing, Gemini 2.5 Flash is more affordable.
❓ Frequently Asked Questions
Is Claude Sonnet 4 better than Gemini 2.5 Flash?
Based on the LLM Judge Index™, Claude Sonnet 4 scores higher overall (93.2 vs 82.5). Claude Sonnet 4 leads on accuracy, reasoning, safety, coding, creativity, instruction, while Gemini 2.5 Flash leads on no dimensions.
Which is cheaper, Claude Sonnet 4 or Gemini 2.5 Flash?
Gemini 2.5 Flash is more affordable at $0.15/M tokens.
Which is better for coding?
Claude Sonnet 4 scores higher on coding (91 vs 80).
Which model is safer?
Claude Sonnet 4 has a higher safety score (96 vs 88).