# Amazon Nova Experimental Chat 10 09 vs DeepSeek V4 Flash

> DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 41.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-10-09-vs-deepseek-v4-flash
- Last updated: 2026-10-10
- Shared benchmarks: 9

## Summary

- They share 9 benchmarks with published results for both. Amazon Nova Experimental Chat 10 09 scores higher in 0 categories and DeepSeek V4 Flash in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where DeepSeek V4 Flash leads 53.7 to 26.2.
- DeepSeek V4 Flash has downloadable open weights; the other is API-only.

## Snapshot

| | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| Provider | Amazon | DeepSeek |
| Noometry Index | 41.4 | 53.6 |
| Rank | 124 | 32 |
| Context | — | 1M |
| Input $/M | — | $0.15 |
| Output $/M | — | $0.60 |
| Weights | Proprietary | Open |

## Coding

- Amazon Nova Experimental Chat 10 09: 39.6 (#142)
- DeepSeek V4 Flash: 47.6 (#56)

| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Coding | 1371 | 1457 |
| FrontierCode | — | 18.8% |
| LMArena WebDev | — | 1581 |
| SciCode | — | 49.9% |
| WeirdML | — | 63% |
| ALE-Bench | — | 1,306 |

## Reasoning

- Amazon Nova Experimental Chat 10 09: 26.2 (#122)
- DeepSeek V4 Flash: 53.7 (#25)

| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Hard Prompts | 1356 | 1443 |
| ARC-AGI-2 | — | 61.4% |
| SimpleBench | — | 61.1% |
| Kagi LLM Benchmark | — | 52.2% |
| NYT Connections (extended) | — | 89.6% |
| ARC-AGI-1 | — | 89% |
| CritPt | — | 16.6% |
| Chess Puzzles | — | 33% |
| Mystery Game Puzzles | — | 34% |
| DTBench | — | 90.9% |
| LMCA | — | 41.7% |
| Epoch Capabilities Index | — | 154.51 |

## Math

- Amazon Nova Experimental Chat 10 09: —
- DeepSeek V4 Flash: 60.0 (#31)

| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 57.5% |
| FrontierMath Tier 4 | — | 24.4% |
| MathArena Final-Answer Competitions | — | 76.5% |
| OTIS Mock AIME 2024-2025 | — | 94.4% |
| ProofBench | — | 56% |
| LMArena Math | — | 1427 |

## Knowledge

- Amazon Nova Experimental Chat 10 09: —
- DeepSeek V4 Flash: 55.5 (#43)

| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| GPQA Diamond | — | 91% |
| SimpleQA Verified | — | 33.6% |
| LMArena Expert | — | 1441 |

## Multilingual

- Amazon Nova Experimental Chat 10 09: 47.5 (#145)
- DeepSeek V4 Flash: 53.2 (#71)

| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Non-English | 1341 | 1420 |
| LMArena Chinese | 1345 | 1467 |
| LMArena French | — | 1438 |
| LMArena German | — | 1418 |
| LMArena Japanese | — | 1403 |
| LMArena Korean | — | 1383 |
| LMArena Russian | — | 1428 |
| LMArena Spanish | — | 1437 |

## Instruction Following

- Amazon Nova Experimental Chat 10 09: 69.7 (#167)
- DeepSeek V4 Flash: 75.1 (#76)

| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Instruction Following | 1316 | 1421 |

## Long Context

- Amazon Nova Experimental Chat 10 09: 40.6 (#146)
- DeepSeek V4 Flash: 43.8 (#81)

| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Longer Query | 1334 | 1435 |

## Writing & Preference

- Amazon Nova Experimental Chat 10 09: 55.0 (#144)
- DeepSeek V4 Flash: 64.0 (#59)

| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Text | 1365 | 1432 |
| LMArena Creative Writing | 1307 | 1403 |
| LMArena Multi-Turn | 1354 | 1449 |
| EQ-Bench Creative Writing | — | 1559 |

## FAQ

### Is Amazon Nova Experimental Chat 10 09 better than DeepSeek V4 Flash?

DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 41.4 on the Noometry Index.

### Is Amazon Nova Experimental Chat 10 09 or DeepSeek V4 Flash better for coding?

DeepSeek V4 Flash scores higher on coding benchmarks: 47.6 versus 39.6 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 10 09 and DeepSeek V4 Flash share?

9 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 09 has 9 scored results on Noometry and DeepSeek V4 Flash has 41.