# DeepSeek-V3.1-Terminus vs GPT-4o

> DeepSeek-V3.1-Terminus is the stronger model overall, scoring 42.6 to 28.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-v3-1-terminus-vs-gpt-4o
- Last updated: 2026-10-10
- Shared benchmarks: 13

## Summary

- They share 13 benchmarks with published results for both. DeepSeek-V3.1-Terminus scores higher in 7 categories and GPT-4o in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in math, where DeepSeek-V3.1-Terminus leads 35.7 to 10.2.
- The biggest single-benchmark swing is DTBench: 81.3% for DeepSeek-V3.1-Terminus and 64.5% for GPT-4o.
- DeepSeek-V3.1-Terminus is cheaper at $0.30 / $1 per million input/output tokens, against $2.50 / $10 for GPT-4o.
- DeepSeek-V3.1-Terminus accepts more context: 164K tokens versus 128K.
- DeepSeek-V3.1-Terminus has downloadable open weights; the other is API-only.

## Snapshot

| | DeepSeek-V3.1-Terminus | GPT-4o |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Noometry Index | 42.6 | 28.5 |
| Rank | 96 | 316 |
| Context | 164K | 128K |
| Input $/M | $0.30 | $2.50 |
| Output $/M | $1 | $10 |
| Weights | Open | Proprietary |

## Coding

- DeepSeek-V3.1-Terminus: 41.5 (#114)
- GPT-4o: 25.1 (#323)

| Benchmark | DeepSeek-V3.1-Terminus | GPT-4o |
|---|---|---|
| LMArena Coding | 1426 | 1297 |
| SWE-bench Verified | — | 31% |
| SWE-bench Verified (bash only) | — | 21.6% |
| Aider Polyglot | — | 45.3% |
| SciCode | 40.6% | — |
| GSO | — | 0% |
| WeirdML | — | 25.1% |
| BigCodeBench Instruct | — | 51.1% |
| LiveBench Coding | — | 51.4% |
| BigCodeBench Complete | — | 61.1% |
| CadEval | — | 26% |
| ALE-Bench | 745.17 | — |
| HumanEval+ | — | 87.2% |
| MBPP+ | — | 72.2% |

## Agentic & Tool Use

- DeepSeek-V3.1-Terminus: —
- GPT-4o: 20.8 (#133)

| Benchmark | DeepSeek-V3.1-Terminus | GPT-4o |
|---|---|---|
| GDPval | — | 9.9% |
| TheAgentCompany | — | 8.6% |
| Cybench | — | 12.5% |
| BALROG | — | 32.3% |
| LMArena Search | — | 1006 |
| METR Time Horizons | — | 40.8% |

## Reasoning

- DeepSeek-V3.1-Terminus: 25.7 (#126)
- GPT-4o: 9.4 (#338)

| Benchmark | DeepSeek-V3.1-Terminus | GPT-4o |
|---|---|---|
| CritPt | 1.7% | 0% |
| LMArena Hard Prompts | 1427 | 1281 |
| DTBench | 81.3% | 64.5% |
| LMCA | 28.6% | 16.6% |
| ARC-AGI-2 | — | 0% |
| SimpleBench | — | 17.8% |
| Kagi LLM Benchmark | 57.4% | — |
| ARC-AGI-1 | — | 4.5% |
| Chess Puzzles | — | 13% |
| EnigmaEval | — | 0.8% |
| LiveBench Reasoning | — | 55.8% |
| LiveBench Data Analysis | — | 60.9% |
| Epoch Capabilities Index | — | 128.97 |
| ForecastBench | — | 57.7 |
| LiveBench | — | 55.3% |

## Math

- DeepSeek-V3.1-Terminus: 35.7 (#138)
- GPT-4o: 10.2 (#303)

| Benchmark | DeepSeek-V3.1-Terminus | GPT-4o |
|---|---|---|
| LMArena Math | 1402 | 1285 |
| FrontierMath (Tiers 1-3) | — | 0.4% |
| OTIS Mock AIME 2024-2025 | — | 6.4% |
| Omni-MATH | — | 29.3% |
| LiveBench Math | — | 49.5% |
| MATH Level 5 | — | 53.3% |
| FrontierMath (Feb 2025 set) | — | 0.3% |

## Knowledge

- DeepSeek-V3.1-Terminus: —
- GPT-4o: 28.8 (#235)

| Benchmark | DeepSeek-V3.1-Terminus | GPT-4o |
|---|---|---|
| GPQA Diamond | — | 49.2% |
| Humanity's Last Exam | — | 2.7% |
| SimpleQA Verified | — | 26% |
| MMLU-Pro | — | 71.3% |
| Confabulations | — | 15.3% |
| Vectara Hallucination Rate | — | 9.6% |
| GPQA (HELM) | — | 52% |
| LMArena Expert | — | 1250 |
| MMLU | — | 88.1% |

## Multimodal

- DeepSeek-V3.1-Terminus: —
- GPT-4o: 33.9 (#85)

| Benchmark | DeepSeek-V3.1-Terminus | GPT-4o |
|---|---|---|
| LMArena Vision | — | 1137 |
| Video-MME | — | 71.9% |
| GeoBench | — | 71% |
| VPCT | — | 40% |
| ScienceQA | — | 88.5% |

## Multilingual

- DeepSeek-V3.1-Terminus: 52.3 (#87)
- GPT-4o: 43.4 (#181)

| Benchmark | DeepSeek-V3.1-Terminus | GPT-4o |
|---|---|---|
| LMArena Non-English | 1407 | 1283 |
| LMArena Russian | 1434 | 1286 |
| LMArena Chinese | — | 1277 |
| LMArena French | — | 1303 |
| LMArena German | — | 1282 |
| LMArena Japanese | — | 1257 |
| LMArena Korean | — | 1234 |
| LMArena Spanish | — | 1292 |

## Instruction Following

- DeepSeek-V3.1-Terminus: 74.4 (#96)
- GPT-4o: 66.8 (#202)

| Benchmark | DeepSeek-V3.1-Terminus | GPT-4o |
|---|---|---|
| LMArena Instruction Following | 1406 | 1278 |
| LiveBench Instruction Following | — | 68.6% |
| IFEval | — | 81.7% |

## Long Context

- DeepSeek-V3.1-Terminus: 43.5 (#88)
- GPT-4o: 39.4 (#174)

| Benchmark | DeepSeek-V3.1-Terminus | GPT-4o |
|---|---|---|
| LMArena Longer Query | 1426 | 1289 |
| Fiction.LiveBench | — | 66.7% |

## Writing & Preference

- DeepSeek-V3.1-Terminus: 61.3 (#87)
- GPT-4o: 52.8 (#160)

| Benchmark | DeepSeek-V3.1-Terminus | GPT-4o |
|---|---|---|
| LMArena Text | 1420 | 1300 |
| LMArena Creative Writing | 1404 | 1291 |
| LMArena Multi-Turn | 1411 | 1302 |
| Short-Story Creative Writing | — | 81.8% |
| WildBench | — | 82.8% |
| LiveBench Language | — | 47.6% |

## FAQ

### Is DeepSeek-V3.1-Terminus better than GPT-4o?

DeepSeek-V3.1-Terminus is the stronger model overall, scoring 42.6 to 28.5 on the Noometry Index.

### Which is cheaper, DeepSeek-V3.1-Terminus or GPT-4o?

DeepSeek-V3.1-Terminus is cheaper. It lists at $0.30 per million input tokens and $1 per million output tokens; GPT-4o lists at $2.50 and $10.

### Is DeepSeek-V3.1-Terminus or GPT-4o better for coding?

DeepSeek-V3.1-Terminus scores higher on coding benchmarks: 41.5 versus 25.1 in the Noometry coding category.

### Which has the bigger context window?

DeepSeek-V3.1-Terminus does, with 164K tokens against 128K.

### How many benchmarks do DeepSeek-V3.1-Terminus and GPT-4o share?

13 benchmarks have published results for both models. DeepSeek-V3.1-Terminus has 16 scored results on Noometry and GPT-4o has 72.