Model comparison
Gemini 3.1 Flash Lite vs Mercury
Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 37.6 on the Noometry Index.
Last verified . 9 shared benchmarks.
GoogleSummary
- They share 9 benchmarks with published results for both. Gemini 3.1 Flash Lite scores higher in 5 categories and Mercury in 1 category; 5 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Gemini 3.1 Flash Lite leads 60.9 to 46.2.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 67.2% for Gemini 3.1 Flash Lite and 21.6% for Mercury.
Side by side
| Gemini 3.1 Flash Lite | Mercury | |
|---|---|---|
| Provider | Inception | |
| Noometry Index | 40.8 | 37.6 |
| Released | 2026-03-03 | — |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | — |
| Max output | 66K | — |
| Input $ / M tokens | $0.25 | — |
| Output $ / M tokens | $1.50 | — |
| Results tracked | 38 | 9 |
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Category by category
Coding Too close to call
Gemini 3.1 Flash Lite: 37.8 (#188), Mercury: 38.7 (#170)
| Benchmark | Gemini 3.1 Flash Lite | Mercury |
|---|---|---|
| LMArena Coding | 1400 | 1322 |
| LMArena WebDev | 1256 | — |
| SciCode | 41.9% | — |
| WeirdML | 52.2% | — |
| ALE-Bench | 797.73 | — |
Agentic & Tool Use Not comparable
Gemini 3.1 Flash Lite: 30.2 (#79), Mercury: —
| Benchmark | Gemini 3.1 Flash Lite | Mercury |
|---|---|---|
| DeepResearch Bench | 37.3% | — |
Reasoning Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 22.9 (#186), Mercury: 17.5 (#293)
| Benchmark | Gemini 3.1 Flash Lite | Mercury |
|---|---|---|
| Kagi LLM Benchmark | 67.2% | 21.6% |
| LMArena Hard Prompts | 1407 | 1285 |
| NYT Connections (extended) | 8.2% | — |
| CritPt | 1.1% | — |
| Chess Puzzles | 25% | — |
| EnigmaEval | 3% | — |
| Thematic Generalization | 63.3% | — |
| DTBench | 76.8% | — |
| LMCA | 35% | — |
| Epoch Capabilities Index | 144.47 | — |
| ForecastBench | 54.4 | — |
Math Not comparable
Gemini 3.1 Flash Lite: 40.7 (#90), Mercury: —
| Benchmark | Gemini 3.1 Flash Lite | Mercury |
|---|---|---|
| FrontierMath (Tiers 1-3) | 27.7% | — |
| OTIS Mock AIME 2024-2025 | 80% | — |
| LMArena Math | 1428 | — |
Knowledge Not comparable
Gemini 3.1 Flash Lite: 41.9 (#104), Mercury: —
| Benchmark | Gemini 3.1 Flash Lite | Mercury |
|---|---|---|
| GPQA Diamond | 81.8% | — |
| Humanity's Last Exam | 8.6% | — |
| Vectara Hallucination Rate | 8.2% | — |
| LMArena Expert | 1398 | — |
Multimodal Not comparable
Gemini 3.1 Flash Lite: 39.4 (#60), Mercury: —
| Benchmark | Gemini 3.1 Flash Lite | Mercury |
|---|---|---|
| LMArena Vision | 1240 | — |
Multilingual Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 52.3 (#86), Mercury: 41.6 (#206)
| Benchmark | Gemini 3.1 Flash Lite | Mercury |
|---|---|---|
| LMArena Non-English | 1411 | 1260 |
| LMArena Chinese | 1461 | — |
| LMArena French | 1424 | — |
| LMArena German | 1429 | — |
| LMArena Japanese | 1413 | — |
| LMArena Korean | 1392 | — |
| LMArena Russian | 1420 | — |
| LMArena Spanish | 1421 | — |
Instruction Following Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 72.7 (#131), Mercury: 65.2 (#224)
| Benchmark | Gemini 3.1 Flash Lite | Mercury |
|---|---|---|
| LMArena Instruction Following | 1377 | 1239 |
Long Context Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 42.5 (#122), Mercury: 38.4 (#198)
| Benchmark | Gemini 3.1 Flash Lite | Mercury |
|---|---|---|
| LMArena Longer Query | 1394 | 1266 |
Writing & Preference Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 60.9 (#94), Mercury: 46.2 (#221)
| Benchmark | Gemini 3.1 Flash Lite | Mercury |
|---|---|---|
| LMArena Text | 1416 | 1282 |
| LMArena Creative Writing | 1401 | 1191 |
| LMArena Multi-Turn | 1417 | 1282 |
Frequently asked questions
Is Gemini 3.1 Flash Lite better than Mercury?
Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 37.6 on the Noometry Index.
Is Gemini 3.1 Flash Lite or Mercury better for coding?
They score almost the same on coding (37.8 vs 38.7); test both on your own repository before choosing.
How many benchmarks do Gemini 3.1 Flash Lite and Mercury share?
9 benchmarks have published results for both models. Gemini 3.1 Flash Lite has 38 scored results on Noometry and Mercury has 9.