Model comparison
Gemini 3.5 Flash Lite vs o1-pro
Gemini 3.5 Flash Lite is the stronger model overall, scoring 41.5 to 31.5 on the Noometry Index.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. Gemini 3.5 Flash Lite scores higher in 2 categories and o1-pro in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Gemini 3.5 Flash Lite leads 50.1 to 29.7.
- The biggest single-benchmark swing is ARC-AGI-1: 53.5% for Gemini 3.5 Flash Lite and 23.3% for o1-pro.
- Gemini 3.5 Flash Lite is cheaper at $0.30 / $2.50 per million input/output tokens, against $150 / $600 for o1-pro.
- Gemini 3.5 Flash Lite accepts more context: 1.05M tokens versus 200K.
Side by side
| Gemini 3.5 Flash Lite | o1-pro | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 41.5 | 31.5 |
| Released | 2026-07-21 | 2025-03-19 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 200K |
| Max output | 66K | 100K |
| Input $ / M tokens | $0.30 | $150 |
| Output $ / M tokens | $2.50 | $600 |
| Results tracked | 39 | 3 |
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Category by category
Coding Not comparable
Gemini 3.5 Flash Lite: 42.4 (#104), o1-pro: —
| Benchmark | Gemini 3.5 Flash Lite | o1-pro |
|---|---|---|
| LMArena WebDev | 1440 | — |
| SciCode | 41.3% | — |
| WeirdML | 39% | — |
| LMArena Coding | 1453 | — |
| ALE-Bench | 765.27 | — |
Agentic & Tool Use Not comparable
Gemini 3.5 Flash Lite: 25.7 (#107), o1-pro: —
| Benchmark | Gemini 3.5 Flash Lite | o1-pro |
|---|---|---|
| APEX-Agents | 29.3% | — |
| GDP.pdf | 10% | — |
Reasoning Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 27.8 (#114), o1-pro: 20.4 (#239)
| Benchmark | Gemini 3.5 Flash Lite | o1-pro |
|---|---|---|
| ARC-AGI-1 | 53.5% | 23.3% |
| ARC-AGI-2 | 10.3% | — |
| NYT Connections (extended) | 60.4% | — |
| CritPt | 0% | — |
| Chess Puzzles | 22% | — |
| EnigmaEval | — | 6.1% |
| LMArena Hard Prompts | 1441 | — |
| Mystery Game Puzzles | 19% | — |
| DTBench | 83.5% | — |
| LMCA | 37.6% | — |
| Epoch Capabilities Index | 145.13 | — |
Math Not comparable
Gemini 3.5 Flash Lite: 25.9 (#264), o1-pro: —
| Benchmark | Gemini 3.5 Flash Lite | o1-pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 26% | — |
| FrontierMath Tier 4 | 0% | — |
| OTIS Mock AIME 2024-2025 | 71.1% | — |
| ProofBench | 13% | — |
| LMArena Math | 1433 | — |
Knowledge Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 50.1 (#72), o1-pro: 29.7 (#234)
| Benchmark | Gemini 3.5 Flash Lite | o1-pro |
|---|---|---|
| GPQA Diamond | 83.3% | — |
| Humanity's Last Exam | — | 8.1% |
| LMArena Expert | 1435 | — |
Multimodal Not comparable
Gemini 3.5 Flash Lite: 41.1 (#40), o1-pro: —
| Benchmark | Gemini 3.5 Flash Lite | o1-pro |
|---|---|---|
| LMArena Vision | 1268 | — |
Multilingual Not comparable
Gemini 3.5 Flash Lite: 53.5 (#63), o1-pro: —
| Benchmark | Gemini 3.5 Flash Lite | o1-pro |
|---|---|---|
| LMArena Non-English | 1427 | — |
| LMArena Chinese | 1469 | — |
| LMArena French | 1451 | — |
| LMArena German | 1454 | — |
| LMArena Japanese | 1427 | — |
| LMArena Korean | 1407 | — |
| LMArena Russian | 1443 | — |
| LMArena Spanish | 1442 | — |
Instruction Following Not comparable
Gemini 3.5 Flash Lite: 74.8 (#85), o1-pro: —
| Benchmark | Gemini 3.5 Flash Lite | o1-pro |
|---|---|---|
| LMArena Instruction Following | 1420 | — |
Long Context Not comparable
Gemini 3.5 Flash Lite: 43.9 (#84), o1-pro: —
| Benchmark | Gemini 3.5 Flash Lite | o1-pro |
|---|---|---|
| LMArena Longer Query | 1435 | — |
Writing & Preference Not comparable
Gemini 3.5 Flash Lite: 64.2 (#57), o1-pro: —
| Benchmark | Gemini 3.5 Flash Lite | o1-pro |
|---|---|---|
| LMArena Text | 1435 | — |
| LMArena Creative Writing | 1420 | — |
| EQ-Bench Creative Writing | 1559 | — |
| LMArena Multi-Turn | 1445 | — |
Frequently asked questions
Is Gemini 3.5 Flash Lite better than o1-pro?
Gemini 3.5 Flash Lite is the stronger model overall, scoring 41.5 to 31.5 on the Noometry Index.
Which is cheaper, Gemini 3.5 Flash Lite or o1-pro?
Gemini 3.5 Flash Lite is cheaper. It lists at $0.30 per million input tokens and $2.50 per million output tokens; o1-pro lists at $150 and $600.
Which has the bigger context window?
Gemini 3.5 Flash Lite does, with 1.05M tokens against 200K.
How many benchmarks do Gemini 3.5 Flash Lite and o1-pro share?
1 benchmark has published results for both models. Gemini 3.5 Flash Lite has 39 scored results on Noometry and o1-pro has 3.