# DeepSeek-V2.5 (Sep 2024) vs GPT-6 Astra

> GPT-6 Astra is the stronger model overall, scoring 70.3 to 37.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-v2-5-vs-gpt-6-astra
- Last updated: 2026-10-10
- Shared benchmarks: 14

## Summary

- They share 14 benchmarks with published results for both. DeepSeek-V2.5 (Sep 2024) scores higher in 0 categories and GPT-6 Astra in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-6 Astra leads 85.1 to 24.5.
- DeepSeek-V2.5 (Sep 2024) has downloadable open weights; the other is API-only.

## Snapshot

| | DeepSeek-V2.5 (Sep 2024) | GPT-6 Astra |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Noometry Index | 37.0 | 70.3 |
| Rank | 197 | 1 |
| Context | — | 1.05M |
| Input $/M | — | $10 |
| Output $/M | — | $50 |
| Weights | Open | Proprietary |

## Coding

- DeepSeek-V2.5 (Sep 2024): 31.3 (#274)
- GPT-6 Astra: 70.5 (#3)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | GPT-6 Astra |
|---|---|---|
| LMArena Coding | 1310 | 1488 |
| DeepSWE | — | 74.1% |
| FrontierCode | — | 53.3% |
| Aider Polyglot | 17.8% | — |
| LMArena WebDev | — | 1792 |
| FrontierSWE | — | 65.5% |
| SciCode | — | 56.5% |
| WeirdML | — | 93.6% |
| BigCodeBench Instruct | 48.6% | — |
| MirrorCode | — | 46.7% |
| BigCodeBench Complete | 53.2% | — |
| ALE-Bench | — | 2,951 |
| HumanEval+ | 83.5% | — |
| MBPP+ | 74.1% | — |

## Agentic & Tool Use

- DeepSeek-V2.5 (Sep 2024): —
- GPT-6 Astra: 52.3 (#3)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | GPT-6 Astra |
|---|---|---|
| APEX-Agents | — | 64.7% |
| Remote Labor Index | — | 20.8% |
| BALROG | — | 68.3% |
| Vending-Bench 2 | — | 15,515 |

## Reasoning

- DeepSeek-V2.5 (Sep 2024): 24.5 (#145)
- GPT-6 Astra: 85.1 (#1)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | GPT-6 Astra |
|---|---|---|
| LMArena Hard Prompts | 1289 | 1464 |
| ARC-AGI-2 | — | 95% |
| NYT Connections (extended) | — | 98.1% |
| ARC-AGI-1 | — | 98.5% |
| CritPt | — | 31.7% |
| Chess Puzzles | — | 72% |
| EBR-Bench | — | 76.2% |
| Mystery Game Puzzles | — | 84% |
| DTBench | — | 97.3% |
| LMCA | — | 64.4% |
| Bench to the Future 3 | — | 0.14 |
| Epoch Capabilities Index | — | 166.6 |

## Math

- DeepSeek-V2.5 (Sep 2024): 33.3 (#177)
- GPT-6 Astra: 93.4 (#1)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | GPT-6 Astra |
|---|---|---|
| LMArena Math | 1289 | 1463 |
| FrontierMath (Tiers 1-3) | — | 93.7% |
| FrontierMath Tier 4 | — | 97.6% |
| OTIS Mock AIME 2024-2025 | — | 100% |
| ProofBench | — | 99% |
| FrontierMath Erdős | — | 2.9% |

## Knowledge

- DeepSeek-V2.5 (Sep 2024): 34.2 (#190)
- GPT-6 Astra: 75.3 (#1)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | GPT-6 Astra |
|---|---|---|
| LMArena Expert | 1266 | 1486 |
| GPQA Diamond | — | 95.8% |
| Humanity's Last Exam | — | 54.8% |
| SimpleQA Verified | — | 75.6% |
| Vectara Hallucination Rate | — | 8.7% |

## Multimodal

- DeepSeek-V2.5 (Sep 2024): —
- GPT-6 Astra: 55.1 (#3)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | GPT-6 Astra |
|---|---|---|
| LMArena Vision | — | 1280 |
| Blueprint-Bench 2 | — | 49.7% |
| Furniture Assembly | — | 80% |
| LMArena Document | — | 1468 |

## Multilingual

- DeepSeek-V2.5 (Sep 2024): 42.7 (#188)
- GPT-6 Astra: 54.0 (#53)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | GPT-6 Astra |
|---|---|---|
| LMArena Non-English | 1273 | 1431 |
| LMArena Chinese | 1317 | 1495 |
| LMArena French | 1288 | 1467 |
| LMArena Russian | 1289 | 1434 |
| LMArena Spanish | 1248 | 1412 |
| LMArena German | 1258 | — |
| LMArena Japanese | 1228 | — |
| LMArena Korean | 1209 | — |

## Instruction Following

- DeepSeek-V2.5 (Sep 2024): 67.7 (#189)
- GPT-6 Astra: 76.6 (#37)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | GPT-6 Astra |
|---|---|---|
| LMArena Instruction Following | 1280 | 1454 |

## Long Context

- DeepSeek-V2.5 (Sep 2024): 39.5 (#169)
- GPT-6 Astra: 44.7 (#57)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | GPT-6 Astra |
|---|---|---|
| LMArena Longer Query | 1301 | 1460 |

## Writing & Preference

- DeepSeek-V2.5 (Sep 2024): 50.0 (#182)
- GPT-6 Astra: 75.7 (#7)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | GPT-6 Astra |
|---|---|---|
| LMArena Text | 1294 | 1443 |
| LMArena Creative Writing | 1285 | 1423 |
| LMArena Multi-Turn | 1297 | 1457 |
| EQ-Bench Creative Writing | — | 2173 |

## FAQ

### Is DeepSeek-V2.5 (Sep 2024) better than GPT-6 Astra?

GPT-6 Astra is the stronger model overall, scoring 70.3 to 37.0 on the Noometry Index.

### Is DeepSeek-V2.5 (Sep 2024) or GPT-6 Astra better for coding?

GPT-6 Astra scores higher on coding benchmarks: 70.5 versus 31.3 in the Noometry coding category.

### How many benchmarks do DeepSeek-V2.5 (Sep 2024) and GPT-6 Astra share?

14 benchmarks have published results for both models. DeepSeek-V2.5 (Sep 2024) has 22 scored results on Noometry and GPT-6 Astra has 51.