# DeepSeek V3.1 (Reasoning) vs GPT-4o

> Side-by-side benchmark comparison for DeepSeek V3.1 (Reasoning) and GPT-4o across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/deepseek-v3-1-reasoning-vs-gpt-4o
- Last updated: October 17, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for DeepSeek V3.1 (Reasoning) and GPT-4o.

## Summary

- DeepSeek V3.1 (Reasoning) and GPT-4o do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | DeepSeek V3.1 (Reasoning) | GPT-4o |
|----------|----------|----------|
| Creator | DeepSeek | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 128K | 128K |
| Independent public score (not head-to-head) | 39.18 | 29.92 |
| Benchmarks Covered | 6 | 2 |
| Pricing (input/output) | $0.00 / $0.00 | $2.50 / $10.00 |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- DeepSeek V3.1 (Reasoning) public-lane score: Coming soon
- GPT-4o public-lane score: Coming soon

| Benchmark | DeepSeek V3.1 (Reasoning) | GPT-4o | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench | 74.8% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- DeepSeek V3.1 (Reasoning) public-lane score: 64.8 (Unranked · 2 rankable rows)
- GPT-4o public-lane score: 59.7 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- DeepSeek V3.1 (Reasoning) public-lane score: 40.7 (Supported · #116/184)
- GPT-4o public-lane score: 27.9 (Estimated · #162/184)

| Benchmark | DeepSeek V3.1 (Reasoning) | GPT-4o | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 80.1% | Coming soon | Coming soon |
| MMLU-Pro | 84.8% | Coming soon | Coming soon |
| HLE | 15.9% | Coming soon | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- DeepSeek V3.1 (Reasoning) public-lane score: Coming soon
- GPT-4o public-lane score: 30.2 (#16/17)

| Benchmark | DeepSeek V3.1 (Reasoning) | GPT-4o | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 61.1% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- DeepSeek V3.1 (Reasoning) public-lane score: 48.4 (#95/148)
- GPT-4o public-lane score: 39 (#121/148)

### Mathematics

- Winner: Insufficient shared evidence
- DeepSeek V3.1 (Reasoning) public-lane score: Coming soon
- GPT-4o public-lane score: 27 (Unranked · 1 rankable row)

| Benchmark | DeepSeek V3.1 (Reasoning) | GPT-4o | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | 93.1% | Coming soon | Coming soon |
| AIME 2025 | 88.4% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 0.351% | Coming soon |

## FAQ

### Can I compare DeepSeek V3.1 (Reasoning) and GPT-4o on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [DeepSeek V3.1 (Reasoning) vs DeepSeek V3.1](/compare/deepseek-v3-1-vs-deepseek-v3-1-reasoning)
- [GPT-4o vs DeepSeek V3.1](/compare/deepseek-v3-1-vs-gpt-4o)
- [DeepSeek V3.1 (Reasoning) vs GPT-4o mini](/compare/deepseek-v3-1-reasoning-vs-gpt-4o-mini)
- [GPT-4o vs GPT-4o mini](/compare/gpt-4o-vs-gpt-4o-mini)

## Explore More

- [DeepSeek V3.1 (Reasoning) profile](/models/deepseek-v3-1-reasoning)
- [GPT-4o profile](/models/gpt-4o)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)