# Gemini 3.1 Flash Lite vs Sonar

> Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 38.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-3-1-flash-lite-vs-sonar
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in writing & preference, where Gemini 3.1 Flash Lite leads 60.9 to 52.6.
- Gemini 3.1 Flash Lite is cheaper at $0.25 / $1.50 per million input/output tokens, against $1 / $1 for Sonar.
- Gemini 3.1 Flash Lite accepts more context: 1.05M tokens versus 128K.

## Snapshot

| | Gemini 3.1 Flash Lite | Sonar |
|---|---|---|
| Provider | Google | Perplexity |
| Noometry Index | 40.8 | 38.5 |
| Rank | 144 | 187 |
| Context | 1.05M | 128K |
| Input $/M | $0.25 | $1 |
| Output $/M | $1.50 | $1 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3.1 Flash Lite: 37.8 (#188)
- Sonar: 35.7 (#221)

| Benchmark | Gemini 3.1 Flash Lite | Sonar |
|---|---|---|
| LMArena WebDev | 1256 | — |
| SciCode | 41.9% | — |
| WeirdML | 52.2% | — |
| LiveBench Coding | — | 35.1% |
| LMArena Coding | 1400 | — |
| ALE-Bench | 797.73 | — |

## Agentic & Tool Use

- Gemini 3.1 Flash Lite: 30.2 (#79)
- Sonar: —

| Benchmark | Gemini 3.1 Flash Lite | Sonar |
|---|---|---|
| DeepResearch Bench | 37.3% | — |

## Reasoning

- Gemini 3.1 Flash Lite: 22.9 (#186)
- Sonar: 21.1 (#227)

| Benchmark | Gemini 3.1 Flash Lite | Sonar |
|---|---|---|
| Kagi LLM Benchmark | 67.2% | — |
| NYT Connections (extended) | 8.2% | — |
| CritPt | 1.1% | — |
| Chess Puzzles | 25% | — |
| EnigmaEval | 3% | — |
| Thematic Generalization | 63.3% | — |
| LiveBench Reasoning | — | 46.3% |
| LMArena Hard Prompts | 1407 | — |
| DTBench | 76.8% | — |
| LiveBench Data Analysis | — | 37.9% |
| LMCA | 35% | — |
| Epoch Capabilities Index | 144.47 | — |
| ForecastBench | 54.4 | — |
| LiveBench | — | 46.9% |

## Math

- Gemini 3.1 Flash Lite: 40.7 (#90)
- Sonar: 33.7 (#200)

| Benchmark | Gemini 3.1 Flash Lite | Sonar |
|---|---|---|
| FrontierMath (Tiers 1-3) | 27.7% | — |
| OTIS Mock AIME 2024-2025 | 80% | — |
| LiveBench Math | — | 41.6% |
| LMArena Math | 1428 | — |

## Knowledge

- Gemini 3.1 Flash Lite: 41.9 (#104)
- Sonar: —

| Benchmark | Gemini 3.1 Flash Lite | Sonar |
|---|---|---|
| GPQA Diamond | 81.8% | — |
| Humanity's Last Exam | 8.6% | — |
| Vectara Hallucination Rate | 8.2% | — |
| LMArena Expert | 1398 | — |

## Multimodal

- Gemini 3.1 Flash Lite: 39.4 (#60)
- Sonar: —

| Benchmark | Gemini 3.1 Flash Lite | Sonar |
|---|---|---|
| LMArena Vision | 1240 | — |

## Multilingual

- Gemini 3.1 Flash Lite: 52.3 (#86)
- Sonar: —

| Benchmark | Gemini 3.1 Flash Lite | Sonar |
|---|---|---|
| LMArena Non-English | 1411 | — |
| 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: 72.7 (#131)
- Sonar: 71.4 (#150)

| Benchmark | Gemini 3.1 Flash Lite | Sonar |
|---|---|---|
| LiveBench Instruction Following | — | 76.2% |
| LMArena Instruction Following | 1377 | — |

## Long Context

- Gemini 3.1 Flash Lite: 42.5 (#122)
- Sonar: —

| Benchmark | Gemini 3.1 Flash Lite | Sonar |
|---|---|---|
| LMArena Longer Query | 1394 | — |

## Writing & Preference

- Gemini 3.1 Flash Lite: 60.9 (#94)
- Sonar: 52.6 (#167)

| Benchmark | Gemini 3.1 Flash Lite | Sonar |
|---|---|---|
| LMArena Text | 1416 | — |
| LMArena Creative Writing | 1401 | — |
| LMArena Multi-Turn | 1417 | — |
| LiveBench Language | — | 44.1% |

## FAQ

### Is Gemini 3.1 Flash Lite better than Sonar?

Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 38.5 on the Noometry Index.

### Which is cheaper, Gemini 3.1 Flash Lite or Sonar?

Gemini 3.1 Flash Lite is cheaper. It lists at $0.25 per million input tokens and $1.50 per million output tokens; Sonar lists at $1 and $1.

### Is Gemini 3.1 Flash Lite or Sonar better for coding?

Gemini 3.1 Flash Lite scores higher on coding benchmarks: 37.8 versus 35.7 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.1 Flash Lite does, with 1.05M tokens against 128K.

### How many benchmarks do Gemini 3.1 Flash Lite and Sonar share?

0 benchmarks have published results for both models. Gemini 3.1 Flash Lite has 38 scored results on Noometry and Sonar has 7.