# GPT-6 Luna vs LongCat-2.5

> Side-by-side benchmark comparison for GPT-6 Luna and LongCat-2.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-6-luna-vs-longcat-2-5
- Last updated: November 9, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: GPT-6 Luna and LongCat-2.5 share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- GPT-6 Luna has the lower published output-token price.
- GPT-6 Luna has the larger published context window at 1.05M.

## Model Snapshot

| Property | GPT-6 Luna | LongCat-2.5 |
|----------|----------|----------|
| Creator | OpenAI | Meituan |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Hybrid |
| Context | 1.05M | 1M |
| Independent public score (not head-to-head) | 62.38 | null |
| Benchmarks Covered | 26 | 22 |
| Pricing (input/output) | $0.10 / $0.50 | $0.30 / $1.20 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-6 Luna public-lane score: 53.8 (Estimated · #47/132)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | GPT-6 Luna | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.1 | 15.20% | Coming soon | Coming soon |
| Agents' Last Exam (Linux) | 57.1% | Coming soon | Coming soon |
| ExploitGym | 11.6% | Coming soon | Coming soon |
| Hermes Index | 33.9% | Coming soon | Coming soon |
| Hermes Bench | 70.5% | Coming soon | Coming soon |
| MazeBench | 0% | Coming soon | Coming soon |
| OSWorld 2.1 Offline | 48.9% | Coming soon | Coming soon |
| 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
- GPT-6 Luna public-lane score: 51.7 (Supported · #42/158)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | GPT-6 Luna | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 66.6% | 64.6% | GPT-6 Luna |
| Bug Hunt Bench | 18.3 fixes | Coming soon | Coming soon |
| FrontierCode 2.0 | 21.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 88.4% | Coming soon |
| ProgramBench | Coming soon | 25.5% | 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
- GPT-6 Luna public-lane score: 54.4 (Supported · #46/157)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | GPT-6 Luna | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| BioBasicsBench | 37.6% | Coming soon | Coming soon |
| ARC-AGI-1 | 86.67% | Coming soon | Coming soon |
| ARC-AGI-2 | 59.3% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.1% | Coming soon | Coming soon |
| ARC-AGI-3 Provider Adapter | 0.59% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-6 Luna public-lane score: 63.8 (Supported · #29/67)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | GPT-6 Luna | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| PerceptionBench (tools) | 62.8% | Coming soon | Coming soon |
| ExtractBench Pro | 0% | Coming soon | Coming soon |
| ExtractBench (LlamaIndex) | 91.01% | Coming soon | Coming soon |
| ParseBench | 64.13% | Coming soon | Coming soon |
| 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
- GPT-6 Luna public-lane score: 62.2 (Supported · #42/179)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | GPT-6 Luna | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| HealthBench (raw) | 50.0% | Coming soon | Coming soon |
| HealthBench (length-adjusted) | 54.5% | Coming soon | Coming soon |
| HealthBench Professional | 60.8% | Coming soon | Coming soon |
| HealthBench Professional (raw) | 61.2% | Coming soon | Coming soon |
| HealthBench Hard | 31.4% | Coming soon | Coming soon |
| FrontierScience | Coming soon | 77% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- GPT-6 Luna public-lane score: 80.2 (Unranked · 2 rankable rows)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | GPT-6 Luna | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 78.947% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 56.098% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between GPT-6 Luna and LongCat-2.5?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [GPT-6 Luna vs GPT-6 Astra](/compare/gpt-6-astra-vs-gpt-6-luna)
- [LongCat-2.5 vs GPT-6 Astra](/compare/gpt-6-astra-vs-longcat-2-5)
- [GPT-6 Luna vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-gpt-6-luna)
- [LongCat-2.5 vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-longcat-2-5)

## Explore More

- [GPT-6 Luna profile](/models/gpt-6-luna)
- [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)