# DeepSeek-V3.1 vs DeepSeek-V3.1-Terminus

> DeepSeek-V3.1 and DeepSeek-V3.1-Terminus score almost the same on the Noometry Index (42.8 vs 43.1), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/deepseek-v3-1-vs-deepseek-v3-1-terminus
- Last updated: 2026-10-12
- Shared benchmarks: 13

## Summary

- They share 13 benchmarks with published results for both. DeepSeek-V3.1 scores higher in 2 categories and DeepSeek-V3.1-Terminus in 5 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in long context, where DeepSeek-V3.1-Terminus leads 43.4 to 36.3.
- DeepSeek-V3.1 is cheaper at $0.25 / $0.95 per million input/output tokens, against $0.27 / $1 for DeepSeek-V3.1-Terminus.

## Snapshot

| | DeepSeek-V3.1 | DeepSeek-V3.1-Terminus |
|---|---|---|
| Provider | DeepSeek | DeepSeek |
| Noometry Index | 42.8 | 43.1 |
| Rank | 108 | 97 |
| Context | 164K | 164K |
| Input $/M | $0.25 | $0.27 |
| Output $/M | $0.95 | $1 |
| Weights | Open | Open |

## Coding

- DeepSeek-V3.1: 40.3 (#144)
- DeepSeek-V3.1-Terminus: 42.0 (#113)

| Benchmark | DeepSeek-V3.1 | DeepSeek-V3.1-Terminus |
|---|---|---|
| LMArena Coding | 1417 | 1426 |
| SciCode | — | 40.6% |
| WeirdML | 38.4% | — |
| ALE-Bench | — | 745.17 |

## Reasoning

- DeepSeek-V3.1: 27.9 (#110)
- DeepSeek-V3.1-Terminus: 26.4 (#133)

| Benchmark | DeepSeek-V3.1 | DeepSeek-V3.1-Terminus |
|---|---|---|
| Kagi LLM Benchmark | 53.2% | 57.4% |
| LMArena Hard Prompts | 1417 | 1426 |
| DTBench | 82.7% | 81.3% |
| LMCA | 24.3% | 28.6% |
| SimpleBench | 40% | — |
| CritPt | — | 1.7% |
| Epoch Capabilities Index | 139.92 | — |
| ForecastBench | 58 | — |

## Math

- DeepSeek-V3.1: 38.9 (#122)
- DeepSeek-V3.1-Terminus: 38.5 (#137)

| Benchmark | DeepSeek-V3.1 | DeepSeek-V3.1-Terminus |
|---|---|---|
| LMArena Math | 1420 | 1402 |

## Knowledge

- DeepSeek-V3.1: 43.7 (#90)
- DeepSeek-V3.1-Terminus: —

| Benchmark | DeepSeek-V3.1 | DeepSeek-V3.1-Terminus |
|---|---|---|
| Vectara Hallucination Rate | 5.5% | — |
| LMArena Expert | 1405 | — |

## Multilingual

- DeepSeek-V3.1: 51.6 (#106)
- DeepSeek-V3.1-Terminus: 52.1 (#92)

| Benchmark | DeepSeek-V3.1 | DeepSeek-V3.1-Terminus |
|---|---|---|
| LMArena Non-English | 1400 | 1407 |
| LMArena Russian | 1405 | 1436 |
| LMArena Chinese | 1469 | — |
| LMArena French | 1447 | — |
| LMArena German | 1411 | — |
| LMArena Japanese | 1378 | — |
| LMArena Korean | 1337 | — |
| LMArena Spanish | 1431 | — |

## Instruction Following

- DeepSeek-V3.1: 73.9 (#110)
- DeepSeek-V3.1-Terminus: 74.0 (#106)

| Benchmark | DeepSeek-V3.1 | DeepSeek-V3.1-Terminus |
|---|---|---|
| LMArena Instruction Following | 1400 | 1404 |

## Long Context

- DeepSeek-V3.1: 36.3 (#232)
- DeepSeek-V3.1-Terminus: 43.4 (#97)

| Benchmark | DeepSeek-V3.1 | DeepSeek-V3.1-Terminus |
|---|---|---|
| LMArena Longer Query | 1422 | 1421 |
| Fiction.LiveBench | 52.8% | — |

## Writing & Preference

- DeepSeek-V3.1: 60.3 (#98)
- DeepSeek-V3.1-Terminus: 61.0 (#92)

| Benchmark | DeepSeek-V3.1 | DeepSeek-V3.1-Terminus |
|---|---|---|
| LMArena Text | 1420 | 1419 |
| LMArena Creative Writing | 1401 | 1403 |
| LMArena Multi-Turn | 1408 | 1411 |
| EQ-Bench Creative Writing | 1436 | — |

## FAQ

### Is DeepSeek-V3.1 better than DeepSeek-V3.1-Terminus?

DeepSeek-V3.1 and DeepSeek-V3.1-Terminus score almost the same on the Noometry Index (42.8 vs 43.1), so choose on price, context window or the category you care about most.

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

DeepSeek-V3.1 is cheaper. It lists at $0.25 per million input tokens and $0.95 per million output tokens; DeepSeek-V3.1-Terminus lists at $0.27 and $1.

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

DeepSeek-V3.1-Terminus scores higher on coding benchmarks: 42.0 versus 40.3 in the Noometry coding category.

### Which has the bigger context window?

Both accept 164K tokens.

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

13 benchmarks have published results for both models. DeepSeek-V3.1 has 27 scored results on Noometry and DeepSeek-V3.1-Terminus has 16.