Model comparison
Gemini 3.1 Flash Lite vs Kimi K2.5 Instant
Kimi K2.5 Instant is the stronger model overall, scoring 42.9 to 40.4 on the Noometry Index.
Last verified . 18 shared benchmarks.
GoogleSummary
- They share 18 benchmarks with published results for both. Gemini 3.1 Flash Lite scores higher in 4 categories and Kimi K2.5 Instant in 5 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Kimi K2.5 Instant leads 28.5 to 22.3.
- Kimi K2.5 Instant has downloadable open weights; the other is API-only.
Side by side
| Gemini 3.1 Flash Lite | Kimi K2.5 Instant | |
|---|---|---|
| Provider | Moonshot AI | |
| Noometry Index | 40.4 | 42.9 |
| Released | 2026-03-03 | — |
| Weights | Proprietary | Open |
| Context window | 1.05M | — |
| Max output | 66K | — |
| Input $ / M tokens | $0.25 | — |
| Output $ / M tokens | $1.50 | — |
| Results tracked | 38 | 18 |
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Category by category
Coding Kimi K2.5 Instant leads
Gemini 3.1 Flash Lite: 37.5 (#179), Kimi K2.5 Instant: 42.3 (#95)
| Benchmark | Gemini 3.1 Flash Lite | Kimi K2.5 Instant |
|---|---|---|
| LMArena WebDev | 1256 | 1404 |
| LMArena Coding | 1400 | 1483 |
| SciCode | 41.9% | — |
| WeirdML | 52.2% | — |
| ALE-Bench | 797.73 | — |
Agentic & Tool Use Not comparable
Gemini 3.1 Flash Lite: 29.9 (#72), Kimi K2.5 Instant: —
| Benchmark | Gemini 3.1 Flash Lite | Kimi K2.5 Instant |
|---|---|---|
| DeepResearch Bench | 37.3% | — |
Reasoning Kimi K2.5 Instant leads
Gemini 3.1 Flash Lite: 22.3 (#181), Kimi K2.5 Instant: 28.5 (#88)
| Benchmark | Gemini 3.1 Flash Lite | Kimi K2.5 Instant |
|---|---|---|
| LMArena Hard Prompts | 1407 | 1443 |
| Kagi LLM Benchmark | 67.2% | — |
| 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 | 144.45 | — |
| ForecastBench | 54.4 | — |
Math Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 39.5 (#82), Kimi K2.5 Instant: 36.6 (#105)
| Benchmark | Gemini 3.1 Flash Lite | Kimi K2.5 Instant |
|---|---|---|
| LMArena Math | 1427 | 1443 |
| FrontierMath (Tiers 1-3) | 27.7% | — |
| OTIS Mock AIME 2024-2025 | 80% | — |
Knowledge Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 41.7 (#95), Kimi K2.5 Instant: 39.5 (#121)
| Benchmark | Gemini 3.1 Flash Lite | Kimi K2.5 Instant |
|---|---|---|
| LMArena Expert | 1397 | 1438 |
| GPQA Diamond | 81.8% | — |
| Humanity's Last Exam | 8.6% | — |
| Vectara Hallucination Rate | 8.2% | — |
Multimodal Too close to call
Gemini 3.1 Flash Lite: 38.7 (#57), Kimi K2.5 Instant: 39.5 (#47)
| Benchmark | Gemini 3.1 Flash Lite | Kimi K2.5 Instant |
|---|---|---|
| LMArena Vision | 1240 | 1254 |
Multilingual Too close to call
Gemini 3.1 Flash Lite: 52.5 (#82), Kimi K2.5 Instant: 52.2 (#89)
| Benchmark | Gemini 3.1 Flash Lite | Kimi K2.5 Instant |
|---|---|---|
| LMArena Non-English | 1410 | 1406 |
| LMArena Chinese | 1461 | 1450 |
| LMArena French | 1423 | 1403 |
| LMArena German | 1429 | 1413 |
| LMArena Korean | 1393 | 1378 |
| LMArena Russian | 1420 | 1404 |
| LMArena Spanish | 1420 | 1448 |
| LMArena Japanese | 1411 | — |
Instruction Following Kimi K2.5 Instant leads
Gemini 3.1 Flash Lite: 72.9 (#126), Kimi K2.5 Instant: 75.5 (#61)
| Benchmark | Gemini 3.1 Flash Lite | Kimi K2.5 Instant |
|---|---|---|
| LMArena Instruction Following | 1376 | 1430 |
Long Context Kimi K2.5 Instant leads
Gemini 3.1 Flash Lite: 42.5 (#117), Kimi K2.5 Instant: 43.8 (#82)
| Benchmark | Gemini 3.1 Flash Lite | Kimi K2.5 Instant |
|---|---|---|
| LMArena Longer Query | 1394 | 1435 |
Writing & Preference Too close to call
Gemini 3.1 Flash Lite: 61.0 (#90), Kimi K2.5 Instant: 60.8 (#91)
| Benchmark | Gemini 3.1 Flash Lite | Kimi K2.5 Instant |
|---|---|---|
| LMArena Text | 1416 | 1420 |
| LMArena Creative Writing | 1401 | 1379 |
| LMArena Multi-Turn | 1417 | 1427 |
Frequently asked questions
Is Gemini 3.1 Flash Lite better than Kimi K2.5 Instant?
Kimi K2.5 Instant is the stronger model overall, scoring 42.9 to 40.4 on the Noometry Index.
Is Gemini 3.1 Flash Lite or Kimi K2.5 Instant better for coding?
Kimi K2.5 Instant scores higher on coding benchmarks: 42.3 versus 37.5 in the Noometry coding category.
How many benchmarks do Gemini 3.1 Flash Lite and Kimi K2.5 Instant share?
18 benchmarks have published results for both models. Gemini 3.1 Flash Lite has 38 scored results on Noometry and Kimi K2.5 Instant has 18.