The two are evenly matched.Gemini 2.0 Pro Exp 02.05 is better at coding; Gemini 2.5 Flash at reasoning.
Scores updated · 14 tests both models report · How we compare
Where each one wins
Tests won in each of the two areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
Coding rests on a single test.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Gemini 2.5 Flash pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+16.8points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+5.9points ahead
Where Gemini 2.0 Pro Exp 02.05 pulls ahead
- Code for real scientific research problemsSciCode+2.2points ahead
Every test, side by side
All 14 tests both models report. The winning score is in its model's colour; marks a score checked independently.
ReasoningGemini 2.5 Flash
- GPQA DiamondGemini 2.5 Flash by 16.862.279+16.8
- Humanity's Last ExamGemini 2.5 Flash by 5.96.212.1+5.9
Other results11 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- HMMT Feb. 2025Gemini 2.5 Flash by 56.77.564.2+56.7
- AIME 2025Gemini 2.5 Flash by 44.527.572+44.5
- Aider-PolyglotGemini 2.5 Flash by 26.335.661.9+26.3
- AA IntelligenceGemini 2.5 Flash by 4.48.713.1+4.4
- XSTestGemini 2.5 Flash by 3.495.498.8+3.4
- Artificial Analysis Coding IndexGemini 2.0 Pro Exp 02.05 by 3.325.522.2+3.3
- HarmBenchGemini 2.0 Pro Exp 02.05 by 2.765.362.6+2.7
- bbqGemini 2.5 Flash by 2.195.697.7+2.1
- simple_safety_teststie97.598tie
- AIR-Bench 2024tie68.468.7tie
- anthropic_red_teamtie98.798.8tie
Questions people ask
Which is better, Gemini 2.0 Pro Exp 02.05 or Gemini 2.5 Flash?
Gemini 2.0 Pro Exp 02.05 and Gemini 2.5 Flash each win one of the two areas where both have results. Gemini 2.0 Pro Exp 02.05 wins coding; Gemini 2.5 Flash wins reasoning.
Which is better for coding?
Gemini 2.0 Pro Exp 02.05. It wins the one coding test both models report.
How do you compare the two?
We use the 14 benchmark tests both models have published scores on. The verdict counts the 3 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 11 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.