Compare / head-to-head
GPT-5.2vs
Kimi K2
GPT-5.2 leads 4 of 4 shared benchmarks. GPT-5.2 has the larger context window (400K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
4 – 0
GPT-5.2 leads
Cheaper per token
—
list price, input + output
Larger context
GPT-5.2
400K tokens
Providers
2 providers
OpenAI · Moonshot AI
GPT-5.2
OpenAI · released 2025-12-11
textvision
Kimi K2
Moonshot AI · released 2025-07-11
text
- Context
- 128K
- Max out
- —
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 18 · 7 core
Quality
Benchmark matrix
4 shared · 32 only GPT-5.2 · 14 only Kimi K2| Benchmark | GPT-5.2 | Kimi K2 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 4 | ||||
| AIME 2025 | 100% ↗ | 49.5% ↗ | +50.5 pt | GPT-5.2 |
| GSO Opt@1 (GSO) | 26.5% ↗ | 2% ↗ | +24.5 pt | GPT-5.2 |
| SimpleBench (SimpleBench) | 45.8% ↗ | 26.3% ↗ | +19.5 pt | GPT-5.2 |
| WeirdML (Håvard Tveit Ihle) | 72.2% ↗ | 39.4% ↗ | +32.8 pt | GPT-5.2 |
| Only GPT-5.2 reports · 32 | ||||
| SWE-bench Verified | 80% ↗ | not reported | — | — |
| GPQA Diamond | 92.4% ↗ | not reported | — | — |
| AIME 2026 | 98.3% ↗matharena | not reported | — | — |
| LMArena Elo | 1412.4 ↗ | not reported | — | — |
| ARC-AGI-1 (Verified) | 86.2% ↗ | not reported | — | — |
| ARC-AGI-2 (Verified) | 52.9% ↗ | not reported | — | — |
| Chess Puzzles (Epoch AI run) | 49% ↗epoch run | not reported | — | — |
| EBR-bench (Epoch AI run) | 23% ↗epoch run | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 31.7% ↗epoch run | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 67.4% ↗epoch run | not reported | — | — |
| Furniture Assembly (Epoch AI run) | 38.3% ↗epoch run | not reported | — | — |
| GDPval (wins or ties) | 70.9% ↗ | not reported | — | — |
| LiveBench Agentic Coding (LiveBench) | 50.3% ↗ | not reported | — | — |
| LiveBench Coding (LiveBench) | 76.1% ↗ | not reported | — | — |
| LiveBench Data Analysis (LiveBench) | 78.2% ↗ | not reported | — | — |
| LiveBench Instruction Following (LiveBench) | 61.8% ↗ | not reported | — | — |
| LiveBench Language (LiveBench) | 79.8% ↗ | not reported | — | — |
| LiveBench Mathematics (LiveBench) | 93.2% ↗ | not reported | — | — |
| LiveBench Reasoning (LiveBench) | 83.2% ↗ | not reported | — | — |
| LMArena Vision (LMArena) | 1242.8 ↗ | not reported | — | — |
| LMArena WebDev (LMArena) | 1415.5 ↗ | not reported | — | — |
| Mystery Game Puzzles (Epoch AI run) | 23% ↗epoch run | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 96.1% ↗epoch run | not reported | — | — |
| SAGE (Vals AI) | 49.3% ↗ | not reported | — | — |
| SimpleQA Verified | 37.1% ↗epoch run | not reported | — | — |
| SWE-Bench Pro | 55.6% ↗ | not reported | — | — |
| SWE-bench Verified (Epoch AI run) | 73.8% ↗epoch run | not reported | — | — |
| tau2-bench Airline (Sierra) | 83% ↗ | not reported | — | — |
| tau2-bench Banking Knowledge (Sierra) | 32.2% ↗ | not reported | — | — |
| tau2-bench Retail (Sierra) | 81.6% ↗ | not reported | — | — |
| tau2-bench Telecom (Sierra) | 89.7% ↗ | not reported | — | — |
| Vending-Bench 2 (Andon Labs) | 3591.33 ↗ | not reported | — | — |
| Only Kimi K2 reports · 14 | ||||
| MMLU-Pro | not reported | 81.1% ↗ | — | — |
| Aider-Polyglot | not reported | 60% ↗ | — | — |
| GPQA-Diamond | not reported | 75.1% ↗ | — | — |
| Humanity's Last Exam (Text Only) | not reported | 4.7% ↗ | — | — |
| IFEval (Prompt Strict) | not reported | 89.8% ↗ | — | — |
| LiveCodeBench v6 (Aug 24 - May 25) | not reported | 53.7% ↗ | — | — |
| MMLU-Redux | not reported | 92.7% ↗ | — | — |
| SimpleQA | not reported | 31% ↗ | — | — |
| SWE-bench Multilingual (Agentic Coding, single attempt) | not reported | 47.3% ↗ | — | — |
| SWE-bench Verified (Agentic Coding, single attempt) | not reported | 65.8% ↗ | — | — |
| Tau2 airline | not reported | 56.5% ↗ | — | — |
| Tau2 retail | not reported | 70.6% ↗ | — | — |
| Tau2 telecom | not reported | 65.8% ↗ | — | — |
| TerminalBench (Inhouse Framework) | not reported | 30% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is GPT-5.2 minus Kimi K2 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | GPT-5.2 | Kimi K2 | Edge |
|---|---|---|---|
| Context window | 400K tokens | 128K tokens | GPT-5.2 |
| Max output | 128K tokens | — | — |
| Input price / 1M | $1.75 ↗ | — | — |
| Output price / 1M | $14 ↗ | — | — |
| Cached input / 1M | $0.175 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $15.75 | — | — |
| Modalities | text · vision | text | GPT-5.2 |
| Released | 2025-12-11 | 2025-07-11 | — |
| Cited benchmark scores | 45 | 18 | — |
Reliability
Provider status
Live from /statusMore matchups
GPT-5.2 vs …
Models sharing the most benchmarksMore matchups
Kimi K2 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run GPT-5.2 and Kimi K2 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.