GPT-5.2 Pro vs Kimi K3
Kimi K3 leads the LLM Stats Score 52.2 to 42.9. Kimi K3 is 10.1x cheaper per token.
OpenAI · Moonshot AI · Updated for 2026
Which is better?
Kimi K3 leads the overall LLM Stats Score 52.2 to 42.9, ranking #12 overall.
In the 3 individual benchmarks reported for both models, Kimi K3 wins 3; this is a narrower head-to-head signal than the composite indexes.
On price, Kimi K3 is roughly 10.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Kimi K3 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GPT-5.2 Pro
- you want predictable pricing at $21.00/M input and $168.00/M output
Choose Kimi K3
- overall performance matters — it scores 52.2 and ranks #12 on LLM Stats
- your work emphasizes reasoning and agents — it leads those capability indexes
- you value its reported benchmark strengths — it wins 3 of 3 exact shared results
- cost matters — it's about 10.1x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Jul 2026
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
7 reported for GPT-5.2 Pro · 31 for Kimi K3
GPT-5.2 Pro outperforms in 0 benchmarks, while Kimi K3 is better at 3 benchmarks (BrowseComp, GPQA, Humanity's Last Exam).
Kimi K3 significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-5.2 Pro ($21.00/1M tokens) is 7.4x more expensive than Kimi K3 ($2.85/1M tokens).
For output processing, GPT-5.2 Pro ($168.00/1M tokens) is 11.8x more expensive than Kimi K3 ($14.25/1M tokens).
In conclusion, GPT-5.2 Pro is more expensive than Kimi K3.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Kimi K3 accepts 1,048,576 input tokens compared to GPT-5.2 Pro's 400,000 tokens. Kimi K3 can generate longer responses up to 1,048,576 tokens, while GPT-5.2 Pro is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Both GPT-5.2 Pro and Kimi K3 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-5.2 Pro
Kimi K3
License
Usage and distribution terms
GPT-5.2 Pro is licensed under a proprietary license, while Kimi K3 uses Kimi K3 License.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Kimi K3 License
Open weights
Release Timeline
When each model was launched
GPT-5.2 Pro was released on 2025-12-11, while Kimi K3 was released on 2026-07-16.
Kimi K3 is 7 months newer than GPT-5.2 Pro.
Dec 11, 2025
10 months ago
Jul 16, 2026
2 months ago
7mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
GPT-5.2 Pro is available from OpenAI. Kimi K3 is available from DeepInfra, Fireworks, Moonshot AI, Novita, Together.
GPT-5.2 Pro
Kimi K3
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-5.2 Pro and Kimi K3 side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-5.2 Pro vs Kimi K3.