Model comparison
Amazon Nova Experimental Chat 10 09 vs DeepSeek V4 Flash
DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 41.9 on the Noometry Index.
Last verified . 9 shared benchmarks.
DeepSeekSummary
- 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 27.3.
- DeepSeek V4 Flash has downloadable open weights; the other is API-only.
Side by side
| Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash | |
|---|---|---|
| Provider | Amazon | DeepSeek |
| Noometry Index | 41.9 | 53.6 |
| Released | — | 2026-04-24 |
| Weights | Proprietary | Open |
| Context window | — | 1M |
| Max output | — | 393K |
| Input $ / M tokens | — | $0.15 |
| Output $ / M tokens | — | $0.60 |
| Results tracked | 9 | 41 |
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Category by category
Coding DeepSeek V4 Flash leads
Amazon Nova Experimental Chat 10 09: 40.2 (#145), DeepSeek V4 Flash: 47.9 (#59)
| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Coding | 1370 | 1457 |
| FrontierCode | — | 18.8% |
| LMArena WebDev | — | 1582 |
| SciCode | — | 49.9% |
| WeirdML | — | 63% |
| ALE-Bench | — | 1,306 |
Reasoning DeepSeek V4 Flash leads
Amazon Nova Experimental Chat 10 09: 27.3 (#120), DeepSeek V4 Flash: 53.7 (#30)
| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Hard Prompts | 1356 | 1444 |
| 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 | — | 154.49 |
Math Not comparable
Amazon Nova Experimental Chat 10 09: —, DeepSeek V4 Flash: 60.3 (#37)
| 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 Not comparable
Amazon Nova Experimental Chat 10 09: —, DeepSeek V4 Flash: 55.4 (#48)
| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| GPQA Diamond | — | 91% |
| SimpleQA Verified | — | 33.6% |
| LMArena Expert | — | 1441 |
Multilingual DeepSeek V4 Flash leads
Amazon Nova Experimental Chat 10 09: 47.3 (#150), DeepSeek V4 Flash: 53.0 (#72)
| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Non-English | 1340 | 1420 |
| LMArena Chinese | 1341 | 1468 |
| LMArena French | — | 1439 |
| LMArena German | — | 1418 |
| LMArena Japanese | — | 1406 |
| LMArena Korean | — | 1384 |
| LMArena Russian | — | 1428 |
| LMArena Spanish | — | 1436 |
Instruction Following DeepSeek V4 Flash leads
Amazon Nova Experimental Chat 10 09: 69.4 (#172), DeepSeek V4 Flash: 74.9 (#81)
| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Instruction Following | 1315 | 1421 |
Long Context DeepSeek V4 Flash leads
Amazon Nova Experimental Chat 10 09: 40.5 (#152), DeepSeek V4 Flash: 43.8 (#85)
| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Longer Query | 1333 | 1434 |
Writing & Preference DeepSeek V4 Flash leads
Amazon Nova Experimental Chat 10 09: 54.7 (#149), DeepSeek V4 Flash: 63.8 (#61)
| Benchmark | Amazon Nova Experimental Chat 10 09 | DeepSeek V4 Flash |
|---|---|---|
| LMArena Text | 1364 | 1432 |
| LMArena Creative Writing | 1307 | 1403 |
| LMArena Multi-Turn | 1355 | 1449 |
| EQ-Bench Creative Writing | — | 1559 |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 09 better than DeepSeek V4 Flash?
DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 41.9 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: 47.9 versus 40.2 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.