# GPT-5.2 vs GPT-6 Luna (Decisions)

> Side-by-side benchmark comparison for GPT-5.2 and GPT-6 Luna (Decisions) across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-2-vs-gpt-6-luna-decisions
- Last updated: November 11, 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 GPT-5.2 and GPT-6 Luna (Decisions).

## Summary

- GPT-5.2 and GPT-6 Luna (Decisions) 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 | GPT-5.2 | GPT-6 Luna (Decisions) |
|----------|----------|----------|
| Creator | OpenAI | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Unspecified |
| Context | 400K | 1.05M |
| Independent public score (not head-to-head) | 59.49 | null |
| Benchmarks Covered | 33 | 0 |
| Pricing (input/output) | $1.75 / $14.00 | $0.10 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.2 public-lane score: 44.9 (Supported · #61/132)
- GPT-6 Luna (Decisions) public-lane score: Coming soon

| Benchmark | GPT-5.2 | GPT-6 Luna (Decisions) | Winner |
|-----------|-----------|-----------|--------|
| LifeVal | 49.3% | Coming soon | Coming soon |
| BrowseComp | 65.8% | Coming soon | Coming soon |
| OSWorld-Verified | 47.3% | Coming soon | Coming soon |
| Gert Labs | 46.54% | Coming soon | Coming soon |
| JobBench | 34.3% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.2 public-lane score: 37.4 (Supported · #78/158)
- GPT-6 Luna (Decisions) public-lane score: Coming soon

| Benchmark | GPT-5.2 | GPT-6 Luna (Decisions) | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80% | Coming soon | Coming soon |
| SWE-bench Pro | 55.6% | Coming soon | Coming soon |
| Vibe Code Bench | 53.50% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.2 public-lane score: 50.2 (Supported · #52/158)
- GPT-6 Luna (Decisions) public-lane score: Coming soon

| Benchmark | GPT-5.2 | GPT-6 Luna (Decisions) | Winner |
|-----------|-----------|-----------|--------|
| BioBasicsBench | 31.2% | Coming soon | Coming soon |
| ARC-AGI-2 | 52.9% | Coming soon | Coming soon |
| ARC-AGI-1 | 86.17% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.2 public-lane score: 58.7 (Estimated · #40/67)
- GPT-6 Luna (Decisions) public-lane score: Coming soon

| Benchmark | GPT-5.2 | GPT-6 Luna (Decisions) | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 86.7% | Coming soon | Coming soon |
| MMMU-Pro | 79.5% | Coming soon | Coming soon |
| RealWorldQA | 83.3% | Coming soon | Coming soon |
| OmniDocBench 1.5 | 85.7% | Coming soon | Coming soon |
| Video-MME (with subtitle) | 86.0% | Coming soon | Coming soon |
| Video-MME (w/o subtitle) | 85.8% | Coming soon | Coming soon |
| MathVision | 83.0% | Coming soon | Coming soon |
| We-Math | 79.0% | Coming soon | Coming soon |
| DynaMath | 86.8% | Coming soon | Coming soon |
| SimpleVQA | 55.8% | Coming soon | Coming soon |
| CC-OCR | 70.3% | Coming soon | Coming soon |
| AI2D_TEST | 92.2% | Coming soon | Coming soon |
| CountBench | 91.9% | Coming soon | Coming soon |
| ERQA | 59.8% | Coming soon | Coming soon |
| VideoMMMU | 85.9% | Coming soon | Coming soon |
| MLVU (M-Avg) | 85.6% | Coming soon | Coming soon |
| CharXiv | 82.1% | Coming soon | Coming soon |
| V* | 75.9% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.2 public-lane score: 58.4 (Supported · #52/179)
- GPT-6 Luna (Decisions) public-lane score: Coming soon

| Benchmark | GPT-5.2 | GPT-6 Luna (Decisions) | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.4% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5.2 public-lane score: 92.6 (#20/157)
- GPT-6 Luna (Decisions) public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- GPT-5.2 public-lane score: 66.5 (Unranked · 3 rankable rows)
- GPT-6 Luna (Decisions) public-lane score: Coming soon

| Benchmark | GPT-5.2 | GPT-6 Luna (Decisions) | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 100% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 67.400% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 31.700% | Coming soon | Coming soon |

## FAQ

### Can I compare GPT-5.2 and GPT-6 Luna (Decisions) 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

- [GPT-5.2 vs GPT-5.2 Pro](/compare/gpt-5-2-vs-gpt-5-2-pro)
- [GPT-6 Luna (Decisions) vs GPT-5.2 Pro](/compare/gpt-5-2-pro-vs-gpt-6-luna-decisions)
- [GPT-5.2 vs GPT-5.2 Instant](/compare/gpt-5-2-vs-gpt-5-2-instant)
- [GPT-6 Luna (Decisions) vs GPT-5.2 Instant](/compare/gpt-5-2-instant-vs-gpt-6-luna-decisions)

## Explore More

- [GPT-5.2 profile](/models/gpt-5-2)
- [GPT-6 Luna (Decisions) profile](/models/gpt-6-luna-decisions)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)