# Codestral vs Gemini 3.1 Flash Lite

> Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 30.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/codestral-vs-gemini-3-1-flash-lite
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Codestral scores higher in 0 categories and Gemini 3.1 Flash Lite in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in coding, where Gemini 3.1 Flash Lite leads 37.8 to 27.3.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 32.5% for Codestral and 67.2% for Gemini 3.1 Flash Lite.
- Codestral is cheaper at $0.30 / $0.90 per million input/output tokens, against $0.25 / $1.50 for Gemini 3.1 Flash Lite.
- Gemini 3.1 Flash Lite accepts more context: 1.05M tokens versus 256K.

## Snapshot

| | Codestral | Gemini 3.1 Flash Lite |
|---|---|---|
| Provider | Mistral AI | Google |
| Noometry Index | 30.6 | 40.8 |
| Rank | 290 | 144 |
| Context | 256K | 1.05M |
| Input $/M | $0.30 | $0.25 |
| Output $/M | $0.90 | $1.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Codestral: 27.3 (#321)
- Gemini 3.1 Flash Lite: 37.8 (#188)

| Benchmark | Codestral | Gemini 3.1 Flash Lite |
|---|---|---|
| ALE-Bench | 137.78 | 797.73 |
| Aider Polyglot | 11.1% | — |
| LMArena WebDev | — | 1256 |
| SciCode | — | 41.9% |
| WeirdML | — | 52.2% |
| BigCodeBench Instruct | 41.8% | — |
| LMArena Coding | — | 1400 |
| BigCodeBench Complete | 52.5% | — |
| HumanEval+ | 73.8% | — |
| MBPP+ | 61.9% | — |

## Agentic & Tool Use

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

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

## Reasoning

- Codestral: 19.8 (#251)
- Gemini 3.1 Flash Lite: 22.9 (#186)

| Benchmark | Codestral | Gemini 3.1 Flash Lite |
|---|---|---|
| Kagi LLM Benchmark | 32.5% | 67.2% |
| NYT Connections (extended) | — | 8.2% |
| CritPt | — | 1.1% |
| Chess Puzzles | — | 25% |
| EnigmaEval | — | 3% |
| Thematic Generalization | — | 63.3% |
| LMArena Hard Prompts | — | 1407 |
| DTBench | — | 76.8% |
| LMCA | — | 35% |
| Epoch Capabilities Index | — | 144.47 |
| ForecastBench | — | 54.4 |

## Math

- Codestral: —
- Gemini 3.1 Flash Lite: 40.7 (#90)

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

## Knowledge

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

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

## Multimodal

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

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

## Multilingual

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

| Benchmark | Codestral | Gemini 3.1 Flash Lite |
|---|---|---|
| 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

- Codestral: —
- Gemini 3.1 Flash Lite: 72.7 (#131)

| Benchmark | Codestral | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Instruction Following | — | 1377 |

## Long Context

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

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

## Writing & Preference

- Codestral: —
- Gemini 3.1 Flash Lite: 60.9 (#94)

| Benchmark | Codestral | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Text | — | 1416 |
| LMArena Creative Writing | — | 1401 |
| LMArena Multi-Turn | — | 1417 |

## FAQ

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

Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 30.6 on the Noometry Index.

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

Codestral is cheaper. It lists at $0.30 per million input tokens and $0.90 per million output tokens; Gemini 3.1 Flash Lite lists at $0.25 and $1.50.

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

Gemini 3.1 Flash Lite scores higher on coding benchmarks: 37.8 versus 27.3 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.1 Flash Lite does, with 1.05M tokens against 256K.

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

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