Model comparison
Gemini 2.5 Flash vs Gemini 2.5 Flash-Lite
Gemini 2.5 Flash is the stronger model overall, scoring 39.3 to 37.0 on the Noometry Index. Gemini 2.5 Flash-Lite costs 4.9× less per token, which makes it the better buy when Gemini 2.5 Flash's lead doesn't matter for your workload.
Last verified . 33 shared benchmarks.
GoogleSummary
- They share 33 benchmarks with published results for both. Gemini 2.5 Flash scores higher in 7 categories and Gemini 2.5 Flash-Lite in 3 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in long context, where Gemini 2.5 Flash leads 47.5 to 33.3.
- The biggest single-benchmark swing is Fiction.LiveBench: 77.8% for Gemini 2.5 Flash and 47.2% for Gemini 2.5 Flash-Lite.
- Gemini 2.5 Flash-Lite is cheaper at $0.10 / $0.40 per million input/output tokens, against $0.30 / $2.50 for Gemini 2.5 Flash.
Side by side
| Gemini 2.5 Flash | Gemini 2.5 Flash-Lite | |
|---|---|---|
| Provider | ||
| Noometry Index | 39.3 | 37.0 |
| Released | 2025-04-17 | 2025-06-17 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 1.05M |
| Max output | 66K | 66K |
| Input $ / M tokens | $0.30 | $0.10 |
| Output $ / M tokens | $2.50 | $0.40 |
| Results tracked | 54 | 33 |
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Category by category
Coding Gemini 2.5 Flash-Lite leads
Gemini 2.5 Flash: 35.8 (#220), Gemini 2.5 Flash-Lite: 38.5 (#173)
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Flash-Lite |
|---|---|---|
| WeirdML | 41.9% | 35.2% |
| LMArena Coding | 1424 | 1373 |
| ALE-Bench | 661.88 | 325.9 |
| SWE-bench Verified (bash only) | 28.7% | — |
| Aider Polyglot | 55.1% | — |
Agentic & Tool Use Gemini 2.5 Flash leads
Gemini 2.5 Flash: 30.8 (#74), Gemini 2.5 Flash-Lite: 28.0 (#96)
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Flash-Lite |
|---|---|---|
| Berkeley Function Calling Leaderboard | 56.2% | 36.9% |
| Terminal-Bench | 17.1% | — |
| TheAgentCompany | 41.1% | — |
| BALROG | 33.5% | — |
| Vending-Bench 2 | 548.84 | — |
Reasoning Gemini 2.5 Flash-Lite leads
Gemini 2.5 Flash: 18.1 (#286), Gemini 2.5 Flash-Lite: 22.2 (#205)
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Flash-Lite |
|---|---|---|
| Kagi LLM Benchmark | 56.8% | 40.5% |
| LMArena Hard Prompts | 1422 | 1377 |
| DTBench | 76.5% | 62.8% |
| LMCA | 27.5% | 18.1% |
| Epoch Capabilities Index | 143.03 | 133.94 |
| ARC-AGI-2 | 2.5% | — |
| SimpleBench | 41.2% | — |
| ARC-AGI-1 | 33.3% | — |
| CritPt | 1.1% | — |
| EnigmaEval | 2.7% | — |
| ForecastBench | 60.6 | — |
Math Gemini 2.5 Flash leads
Gemini 2.5 Flash: 39.9 (#98), Gemini 2.5 Flash-Lite: 38.0 (#144)
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Flash-Lite |
|---|---|---|
| Omni-MATH | 38.5% | 48% |
| LMArena Math | 1415 | 1373 |
| OTIS Mock AIME 2024-2025 | 73.1% | — |
| FrontierMath (Feb 2025 set) | 4.8% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Gemini 2.5 Flash leads
Gemini 2.5 Flash: 36.4 (#168), Gemini 2.5 Flash-Lite: 32.5 (#210)
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Flash-Lite |
|---|---|---|
| MMLU-Pro | 63.9% | 53.7% |
| Vectara Hallucination Rate | 7.8% | 3.3% |
| GPQA (HELM) | 39% | 30.9% |
| LMArena Expert | 1426 | 1373 |
| Humanity's Last Exam | 12.1% | — |
| Confabulations | 16.8% | — |
Multimodal Gemini 2.5 Flash leads
Gemini 2.5 Flash: 41.8 (#32), Gemini 2.5 Flash-Lite: 29.1 (#114)
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Flash-Lite |
|---|---|---|
| LMArena Vision | 1253 | 1198 |
| VPCT | 46.2% | 30% |
| GeoBench | 76% | — |
| SpatialViz-Bench | 36.9% | — |
Multilingual Gemini 2.5 Flash leads
Gemini 2.5 Flash: 52.3 (#88), Gemini 2.5 Flash-Lite: 49.3 (#134)
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Flash-Lite |
|---|---|---|
| LMArena Non-English | 1409 | 1369 |
| LMArena Chinese | 1450 | 1404 |
| LMArena French | 1433 | 1388 |
| LMArena German | 1418 | 1389 |
| LMArena Japanese | 1405 | 1359 |
| LMArena Korean | 1385 | 1360 |
| LMArena Russian | 1415 | 1373 |
| LMArena Spanish | 1421 | 1396 |
Instruction Following Gemini 2.5 Flash leads
Gemini 2.5 Flash: 75.7 (#54), Gemini 2.5 Flash-Lite: 70.0 (#168)
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Flash-Lite |
|---|---|---|
| IFEval | 89.8% | 81% |
| LMArena Instruction Following | 1405 | 1367 |
Long Context Gemini 2.5 Flash leads
Gemini 2.5 Flash: 47.5 (#17), Gemini 2.5 Flash-Lite: 33.3 (#262)
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Flash-Lite |
|---|---|---|
| Fiction.LiveBench | 77.8% | 47.2% |
| LMArena Longer Query | 1419 | 1373 |
Writing & Preference Gemini 2.5 Flash-Lite leads
Gemini 2.5 Flash: 53.8 (#157), Gemini 2.5 Flash-Lite: 56.8 (#135)
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Flash-Lite |
|---|---|---|
| LMArena Text | 1417 | 1379 |
| LMArena Creative Writing | 1400 | 1367 |
| WildBench | 81.7% | 81.8% |
| LMArena Multi-Turn | 1408 | 1366 |
| Short-Story Creative Writing | 76.5% | — |
| EQ-Bench Creative Writing | 1137 | — |
Frequently asked questions
Is Gemini 2.5 Flash better than Gemini 2.5 Flash-Lite?
Gemini 2.5 Flash is the stronger model overall, scoring 39.3 to 37.0 on the Noometry Index. Gemini 2.5 Flash-Lite costs 4.9× less per token, which makes it the better buy when Gemini 2.5 Flash's lead doesn't matter for your workload.
Which is cheaper, Gemini 2.5 Flash or Gemini 2.5 Flash-Lite?
Gemini 2.5 Flash-Lite is cheaper. It lists at $0.10 per million input tokens and $0.40 per million output tokens; Gemini 2.5 Flash lists at $0.30 and $2.50.
Is Gemini 2.5 Flash or Gemini 2.5 Flash-Lite better for coding?
Gemini 2.5 Flash-Lite scores higher on coding benchmarks: 38.5 versus 35.8 in the Noometry coding category.
Which has the bigger context window?
Both accept 1.05M tokens.
How many benchmarks do Gemini 2.5 Flash and Gemini 2.5 Flash-Lite share?
33 benchmarks have published results for both models. Gemini 2.5 Flash has 54 scored results on Noometry and Gemini 2.5 Flash-Lite has 33.