Gemini 2.5 Flash vs Gemini 2.5 Flash Lite
Wins 6 of 7 areas
Coding · Agents · Reasoning · Facts · Images and charts · Long documents
Wins 0 of 7 areas
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Gemini 2.5 Flash is the stronger all-rounder.Gemini 2.5 Flash Lite is cheaper.
Scores updated · 33 tests both models report · How we compare
Where each one wins
Tests won in each of the seven 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.
- CodingWriting and fixing software30Gemini 2.5 Flash3 of 3 tests
- ReasoningHard problems that need careful thinking30Gemini 2.5 Flash3 of 3 tests
- Images and chartsUnderstanding pictures, charts and video20Gemini 2.5 Flash2 of 2 tests
- FactsGetting facts right instead of making them up21Gemini 2.5 Flash2 of 3 tests
- AgentsCarrying out multi-step tasks on its own10Gemini 2.5 Flash1 of 1 test
- Long documentsFinding answers in very long texts10Gemini 2.5 Flash1 of 1 test
- Following instructionsDoing exactly what it is asked00Even0 each · 1 tie
Agents, 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.
Gemini 2.5 Flash Lite costs 82% less for the same work.
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
- Fixes real GitHub issues in Python projectsSWE-bench Verified+28.8points ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+16.5points ahead
- Harder college exam questions with imagesMMMU-Pro+10.9points ahead
Where Gemini 2.5 Flash Lite pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 33 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGemini 2.5 Flash
- SWE-bench VerifiedGemini 2.5 Flash by 28.860.431.6+28.8
- SciCodeGemini 2.5 Flash by 9.829.119.3+9.8
- Terminal-Bench HardGemini 2.5 Flash by 9.113.64.5+9.1
ReasoningGemini 2.5 Flash
- GPQA DiamondGemini 2.5 Flash by 16.57962.5+16.5
- Humanity's Last ExamGemini 2.5 Flash by 5.312.16.8+5.3
- CritPtGemini 2.5 Flash by 1.11.10+1.1
FactsGemini 2.5 Flash
- AA-Omniscience · AccuracyGemini 2.5 Flash by 8.125.917.9+8.1
- Vectara HHEM hallucination ratelower is betterGemini 2.5 Flash Lite by 4.57.83.3+4.5
- AA-Omniscience · Non-hallucinationGemini 2.5 Flash by 2.124.722.6+2.1
Images and chartsGemini 2.5 Flash
Other results19 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.
- LiveCodeBenchGemini 2.5 Flash by 42.576.233.7+42.5
- Aider-PolyglotGemini 2.5 Flash by 35.261.926.7+35.2
- AIME 2025Gemini 2.5 Flash by 22.27249.8+22.2
- SimpleQAGemini 2.5 Flash by 16.226.910.7+16.2
- AA-OmniscienceGemini 2.5 Flash by 15.8-29.8-45.6+15.8
- τ²-Bench Telecom (AA run)Gemini 2.5 Flash by 13.231.618.4+13.2
- AA Agentic IndexGemini 2.5 Flash by 12.718.86.1+12.7
- Artificial Analysis Coding IndexGemini 2.5 Flash by 12.722.29.5+12.7
- Global-MMLU-LiteGemini 2.5 Flash by 7.388.481.1+7.3
- AA IntelligenceGemini 2.5 Flash by 4.613.18.5+4.6
- vectara_factual_consistencyGemini 2.5 Flash Lite by 4.592.296.7+4.5
- HarmBenchGemini 2.5 Flash Lite by 4.462.667+4.4
- AIR-Bench 2024Gemini 2.5 Flash by 2.968.765.8+2.9
- bbqGemini 2.5 Flash by 2.897.794.9+2.8
- simple_safety_testsGemini 2.5 Flash by 1.59896.5+1.5
- XSTestGemini 2.5 Flash by 198.897.8+1
- vectara_avg_summary_lengthtie101.595.7tie
- vectara_answer_ratetie9999.5tie
- anthropic_red_teamtie98.898.7tie
Questions people ask
Which is better, Gemini 2.5 Flash or Gemini 2.5 Flash Lite?
Gemini 2.5 Flash wins six of the seven areas where both have results: coding, agents, reasoning, facts, images and charts and long documents. Gemini 2.5 Flash Lite wins none, but costs 82% less. They are level on following instructions.
Which is better for coding?
Gemini 2.5 Flash. It wins 3 of the 3 coding tests both models report; Gemini 2.5 Flash Lite wins none.
Which is cheaper?
Gemini 2.5 Flash costs $0.30 per million input tokens and $2.50 per million output tokens; Gemini 2.5 Flash Lite costs $0.10 and $0.40. That makes Gemini 2.5 Flash Lite about 82% cheaper for the same work.
How do you compare the two?
We use the 33 benchmark tests both models have published scores on. The verdict counts the 14 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 19 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.