Gemini 2.5 Flash (Preview 09-2025): benchmark results
September 2025 Gemini 2.5 Flash preview snapshot. Provider: Google. Released 2025-09-25. Access: API.
Unified ELO 1642 ± 1, rank #142 of 1392 rated models, from 50 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| SnakeBench | 30.8 | TrueSkill Rating | 88.2 |
| SpeechMap Compliance | 87.7 | % Requests Completed | 87.6 |
| Wolfram LLM Benchmarking Project | 51.9 | Correct Functionality (%) | 73.1 |
| Chatbot Arena (Text - Japanese) | 1395 | Arena Score | 71.2 |
| BenchmarkList ECI | 126.75 | Capability Index (ECI) | 69.8 |
| Chatbot Arena (Text - Creative Writing) | 1381 | Arena Score | 68.5 |
| Chatbot Arena (Text - Instruction Following) | 1401 | Arena Score | 67.9 |
| Chatbot Arena (Text - Math) | 1410 | Arena Score | 67 |
| Chatbot Arena (Vision - English) | 1238 | Arena Score | 66.3 |
| Chatbot Arena (Text - German) | 1414 | Arena Score | 65.9 |
| Chatbot Arena (Text - Chinese) | 1441 | Arena Score | 65.3 |
| Chatbot Arena (Text) | 1404 | Elo | 65 |
Interactive version: theaggregate.ai/model?slug=gemini-2-5-flash-preview-09-2025 · How It Works · Data refreshed daily, snapshot 2026-09-05.