Gemini 2.5 Flash vs Nova Premier
Wins 4 of 5 areas
Coding · Reasoning · Long documents · Following instructions
Wins 0 of 5 areas
—
Gemini 2.5 Flash is the stronger all-rounder.
Scores updated · 14 tests both models report · How we compare
Where each one wins
Tests won in each of the five 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.
- ReasoningHard problems that need careful thinking30Gemini 2.5 Flash3 of 3 tests
- CodingWriting and fixing software20Gemini 2.5 Flash2 of 2 tests
- Long documentsFinding answers in very long texts10Gemini 2.5 Flash1 of 1 test
- Following instructionsDoing exactly what it is asked10Gemini 2.5 Flash1 of 1 test
- FactsGetting facts right instead of making them up11Even1 each
Long documents and following instructions rest on a single test each.
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
- Reasons across sets of long documentsAA-LCR+31points ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+22.1points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+14.1points ahead
Where Nova Premier pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+3.4points 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.
CodingGemini 2.5 Flash
- Terminal-Bench HardGemini 2.5 Flash by 6.813.66.8+6.8
- SciCodeGemini 2.5 Flash by 1.229.127.9+1.2
ReasoningGemini 2.5 Flash
- GPQA DiamondGemini 2.5 Flash by 22.17956.9+22.1
- Humanity's Last ExamGemini 2.5 Flash by 7.912.14.2+7.9
- CritPtGemini 2.5 Flash by 1.11.10+1.1
FactsEven
- AA-Omniscience · AccuracyGemini 2.5 Flash by 4.725.921.3+4.7
- AA-Omniscience · Non-hallucinationNova Premier by 3.424.728.1+3.4
Following instructionsGemini 2.5 Flash
- IFBenchGemini 2.5 Flash by 14.150.336.2+14.1
Other results5 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.
- Artificial Analysis Coding IndexGemini 2.5 Flash by 8.422.213.8+8.4
- τ²-Bench Telecom (AA run)Nova Premier by 6.731.638.3+6.7
- AA-OmniscienceGemini 2.5 Flash by 5.6-29.8-35.4+5.6
- AA IntelligenceGemini 2.5 Flash by 3.913.19.2+3.9
- AA Agentic IndexGemini 2.5 Flash by 2.418.816.4+2.4
Questions people ask
Which is better, Gemini 2.5 Flash or Nova Premier?
Gemini 2.5 Flash wins four of the five areas where both have results: coding, reasoning, long documents and following instructions. Nova Premier wins none. They are level on facts.
Which is better for coding?
Gemini 2.5 Flash. It wins 2 of the 2 coding tests both models report; Nova Premier wins none.
How do you compare the two?
We use the 14 benchmark tests both models have published scores on. The verdict counts the 9 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 5 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.