# GPT-5.2 vs Grok 4.1 Fast

> Side-by-side benchmark comparison for GPT-5.2 and Grok 4.1 Fast across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-2-vs-grok-4-1-fast
- Last updated: October 17, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: GPT-5.2 and Grok 4.1 Fast 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.
- Grok 4.1 Fast has the lower published output-token price.
- Grok 4.1 Fast has the larger published context window at 1M.

## Model Snapshot

| Property | GPT-5.2 | Grok 4.1 Fast |
|----------|----------|----------|
| Creator | OpenAI | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 400K | 1M |
| Independent public score (not head-to-head) | 59.86 | 36.45 |
| Benchmarks Covered | 31 | 1 |
| Pricing (input/output) | $1.75 / $14.00 | $0.20 / $0.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.2 public-lane score: 44.4 (Supported · #58/128)
- Grok 4.1 Fast public-lane score: Coming soon

| Benchmark | GPT-5.2 | Grok 4.1 Fast | Winner |
|-----------|-----------|-----------|--------|
| BrowseComp | 65.8% | Coming soon | Coming soon |
| OSWorld-Verified | 47.3% | Coming soon | Coming soon |
| Gert Labs | 46.54% | 47.32% | Grok 4.1 Fast |
| JobBench | 34.3% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.2 public-lane score: 36.8 (Supported · #73/150)
- Grok 4.1 Fast public-lane score: Coming soon

| Benchmark | GPT-5.2 | Grok 4.1 Fast | 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: 64.3 (Unranked · 4 rankable rows)
- Grok 4.1 Fast public-lane score: 47.4 (Unranked · 2 rankable rows)

| Benchmark | GPT-5.2 | Grok 4.1 Fast | Winner |
|-----------|-----------|-----------|--------|
| 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: 75.9 (#22/54)
- Grok 4.1 Fast public-lane score: 35.9 (Unranked · 1 rankable row)

| Benchmark | GPT-5.2 | Grok 4.1 Fast | 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: 59.7 (Supported · #50/184)
- Grok 4.1 Fast public-lane score: 31.5 (Estimated · #149/184)

| Benchmark | GPT-5.2 | Grok 4.1 Fast | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.4% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5.2 public-lane score: 92.6 (#19/148)
- Grok 4.1 Fast public-lane score: 41.9 (#114/148)

### Mathematics

- Winner: Insufficient shared evidence
- GPT-5.2 public-lane score: 71.1 (Unranked · 3 rankable rows)
- Grok 4.1 Fast public-lane score: Coming soon

| Benchmark | GPT-5.2 | Grok 4.1 Fast | 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

### Is there enough evidence to pick between GPT-5.2 and Grok 4.1 Fast?

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-5.2 vs GPT-5.2 Pro](/compare/gpt-5-2-vs-gpt-5-2-pro)
- [Grok 4.1 Fast vs GPT-5.2 Pro](/compare/gpt-5-2-pro-vs-grok-4-1-fast)
- [GPT-5.2 vs GPT-5.2 Instant](/compare/gpt-5-2-vs-gpt-5-2-instant)
- [Grok 4.1 Fast vs GPT-5.2 Instant](/compare/gpt-5-2-instant-vs-grok-4-1-fast)

## Explore More

- [GPT-5.2 profile](/models/gpt-5-2)
- [Grok 4.1 Fast profile](/models/grok-4-1-fast)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)