# DeepSeek V3.1 vs LongCat-2.5

> Side-by-side benchmark comparison for DeepSeek V3.1 and LongCat-2.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/deepseek-v3-1-vs-longcat-2-5
- Last updated: November 9, 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 and LongCat-2.5.

## Summary

- DeepSeek V3.1 and LongCat-2.5 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 | LongCat-2.5 |
|----------|----------|----------|
| Creator | DeepSeek | Meituan |
| Type | Open Weight | Open Weight |
| Reasoning | Non-Reasoning | Hybrid |
| Context | 128K | 1M |
| Independent public score (not head-to-head) | 40.36 | null |
| Benchmarks Covered | 6 | 22 |
| Pricing (input/output) | $0.00 / $0.00 | $0.30 / $1.20 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- DeepSeek V3.1 public-lane score: Coming soon
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | DeepSeek V3.1 | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | Coming soon | 88.4% | Coming soon |
| Terminal-Bench 4.0 | Coming soon | 38.50% | Coming soon |
| BrowseComp | Coming soon | 91.9% | Coming soon |
| AutomationBench | Coming soon | 51.8% | Coming soon |
| HLE w/ tools | Coming soon | 63.1% | Coming soon |
| Agents' Last Exam | Coming soon | 38.5% | Coming soon |
| MCP Atlas | Coming soon | 83.1% | Coming soon |
| JobBench | Coming soon | 65.4% | Coming soon |
| skillsBench | Coming soon | 63.3% | Coming soon |
| SpreadsheetBench 2 | Coming soon | 34.9% | Coming soon |
| Claw-Eval | Coming soon | 78.3% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- DeepSeek V3.1 public-lane score: Coming soon
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | DeepSeek V3.1 | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 66% | Coming soon | Coming soon |
| LiveCodeBench | 56.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 88.4% | Coming soon |
| ProgramBench | Coming soon | 25.5% | Coming soon |
| DeepSWE | Coming soon | 64.6% | Coming soon |
| PaperBench | Coming soon | 82.1% | Coming soon |
| SWE-Atlas Codebase QnA | Coming soon | 58.3% | Coming soon |
| NL2Repo | Coming soon | 60.5% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- DeepSeek V3.1 public-lane score: 30.8 (Estimated · #119/157)
- LongCat-2.5 public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- DeepSeek V3.1 public-lane score: Coming soon
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | DeepSeek V3.1 | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| Vision2Web | Coming soon | 78.6% | Coming soon |
| CharXiv | Coming soon | 90.2% | Coming soon |
| MathVision w/ Python | Coming soon | 96.5% | Coming soon |
| Video-MME | Coming soon | 85.2% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- DeepSeek V3.1 public-lane score: 37.4 (Supported · #125/179)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | DeepSeek V3.1 | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 74.9% | Coming soon | Coming soon |
| MMLU-Pro | 83.7% | Coming soon | Coming soon |
| FrontierScience | Coming soon | 77% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- DeepSeek V3.1 public-lane score: 43.5 (#118/157)
- LongCat-2.5 public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- DeepSeek V3.1 public-lane score: Coming soon
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | DeepSeek V3.1 | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | 66.3% | Coming soon | Coming soon |
| AIME 2025 | 49.8% | Coming soon | Coming soon |

## FAQ

### Can I compare DeepSeek V3.1 and LongCat-2.5 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 vs DeepSeek V3.1 (Reasoning)](/compare/deepseek-v3-1-vs-deepseek-v3-1-reasoning)
- [LongCat-2.5 vs DeepSeek V3.1 (Reasoning)](/compare/deepseek-v3-1-reasoning-vs-longcat-2-5)
- [DeepSeek V3.1 vs Claude Fable 5.2](/compare/claude-fable-5-2-vs-deepseek-v3-1)
- [LongCat-2.5 vs Claude Fable 5.2](/compare/claude-fable-5-2-vs-longcat-2-5)

## Explore More

- [DeepSeek V3.1 profile](/models/deepseek-v3-1)
- [LongCat-2.5 profile](/models/longcat-2-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)