# GPT-5.2-Codex vs Kimi K2

> Side-by-side benchmark comparison for GPT-5.2-Codex and Kimi K2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-2-codex-vs-kimi-k2
- 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 GPT-5.2-Codex and Kimi K2.

## Summary

- GPT-5.2-Codex and Kimi K2 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-Codex | Kimi K2 |
|----------|----------|----------|
| Creator | OpenAI | Moonshot AI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 400K | 128K |
| Independent public score (not head-to-head) | 55.3 | 33.48 |
| Benchmarks Covered | 5 | 13 |
| Pricing (input/output) | $1.75 / $14.00 | $0.60 / $2.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 40.8 (Estimated · #64/128)
- Kimi K2 public-lane score: Coming soon

| Benchmark | GPT-5.2-Codex | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 51.79% | Coming soon | Coming soon |
| JobBench | 26.0% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 43.7 (Supported · #56/150)
- Kimi K2 public-lane score: Coming soon

| Benchmark | GPT-5.2-Codex | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 37.91% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 88.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 72.4% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 65.8% | Coming soon |
| LiveCodeBench v6 | Coming soon | 53.7% | Coming soon |
| SWE Multilingual | Coming soon | 47.3% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 82.4 (Unranked · 2 rankable rows)
- Kimi K2 public-lane score: 62.3 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 76.9 (Unranked · 1 rankable row)
- Kimi K2 public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 56.4 (Estimated · #54/184)
- Kimi K2 public-lane score: 36.1 (Estimated · #129/184)

| Benchmark | GPT-5.2-Codex | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| MMLU | Coming soon | 89.5% | Coming soon |
| GPQA | Coming soon | 75.1% | Coming soon |
| SuperGPQA | Coming soon | 57.2% | Coming soon |
| MMLU-Pro | Coming soon | 81.1% | Coming soon |
| SimpleQA | Coming soon | 31% | Coming soon |
| HLE | Coming soon | 4.7% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 93.8 (#4/148)
- Kimi K2 public-lane score: 48.4 (#96/148)

| Benchmark | GPT-5.2-Codex | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 89.8% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: Coming soon
- Kimi K2 public-lane score: 0 (#12/12)

| Benchmark | GPT-5.2-Codex | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | Coming soon | 69.6% | Coming soon |
| AIME 2025 | Coming soon | 49.5% | Coming soon |
| MATH-500 | Coming soon | 97.4% | Coming soon |

## FAQ

### Can I compare GPT-5.2-Codex and Kimi K2 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-Codex vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gpt-5-2-codex)
- [Kimi K2 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-kimi-k2)
- [GPT-5.2-Codex vs GPT-6.1 Sol](/compare/gpt-5-2-codex-vs-gpt-6-1-sol)
- [Kimi K2 vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-kimi-k2)

## Explore More

- [GPT-5.2-Codex profile](/models/gpt-5-2-codex)
- [Kimi K2 profile](/models/kimi-k2)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)