GPT-5.2 vs Kimi K2 Thinking
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
OpenAI · Dec 2025
The December 2025 GPT-5 refresh: stronger coding and agentic skills than GPT-5.1 at a moderate price, now the value pick in OpenAI's lineup.
Moonshot AI · Nov 2025
A trillion-parameter open reasoning agent that can chain 200–300 tool calls — the open-weights agentic standout of late 2025.
The verdict
GPT-5.2 wins 1 of the 1 benchmarks these models share, against 0 for Kimi K2 Thinking. On price the gap is dramatic: Kimi K2 Thinking works out roughly 4.5x cheaper per blended million tokens. GPT-5.2 also takes 400K of context versus 262K for Kimi K2 Thinking. And Kimi K2 Thinking is open-weights (Modified MIT), so it can be self-hosted — a structural advantage if data control or vendor independence matters.
Benchmark head-to-head 1–0
Specs & pricing
| GPT-5.2 | Kimi K2 Thinking | |
|---|---|---|
| modhub Index | — | 67.6 |
| Input price / 1M | $1.75 | $0.6 |
| Output price / 1M | $14 | $2.5 |
| Context window | 400K | 262K |
| Max output | 128K | — |
| Open weights | no | yes (Modified MIT) |
| Reasoning model | yes | yes |
| Multimodal input | text, image | text |
| Knowledge cutoff | Aug 2025 | Apr 2025 |
| Released | Dec 2025 | Nov 2025 |
| Example monthly cost* | $38.50 | $9.75 |
* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.
Frequently asked questions
- Which is better, GPT-5.2 or Kimi K2 Thinking?
- GPT-5.2 wins 1 of the 1 benchmarks these models share, against 0 for Kimi K2 Thinking. On price the gap is dramatic: Kimi K2 Thinking works out roughly 4.5x cheaper per blended million tokens. GPT-5.2 also takes 400K of context versus 262K for Kimi K2 Thinking. And Kimi K2 Thinking is open-weights (Modified MIT), so it can be self-hosted — a structural advantage if data control or vendor independence matters.
- Which is cheaper, GPT-5.2 or Kimi K2 Thinking?
- GPT-5.2 costs $1.75/$14 per million input/output tokens, while Kimi K2 Thinking costs $0.6/$2.5. For a typical workload of 10M input and 1.5M output tokens per month, that's $38.50 versus $9.75.
- Which model is better for coding, GPT-5.2 or Kimi K2 Thinking?
- On SWE-bench Verified — the standard agentic-coding benchmark — GPT-5.2 scores ~77.9% versus 71.3% for Kimi K2 Thinking, making GPT-5.2 the stronger pick for coding agents.