Models, measured side by side
GPT-5.2 Pro vs Kimi K3
Compare GPT-5.2 Pro, Kimi K3 by token pricing, context length, benchmark results, speed and tool support.
Monthly workload
Monthly cost breakdown
InputOutput
GPT-5.2 Pro
$1,260 / mo
Kimi K3
$122 / mo
Performance comparison
GPT-5.2 Pro
Not listed
Kimi K3
43.6
Overview
| Overview | GPT-5.2 Pro | Kimi K3 |
|---|---|---|
| Provider | OpenAI | MoonshotAI |
| Released | 2025-12 | 2026-07-16 |
| Status | Active | Active |
| Input formats | imagetextfile | textimagevideo |
| Output formats | text | text |
Provider
- GPT-5.2 Pro
- OpenAI
- Kimi K3
- MoonshotAI
Released
- GPT-5.2 Pro
- 2025-12
- Kimi K3
- 2026-07-16
Status
- GPT-5.2 Pro
- Active
- Kimi K3
- Active
Input formats
- GPT-5.2 Pro
- imagetextfile
- Kimi K3
- textimagevideo
Output formats
- GPT-5.2 Pro
- text
- Kimi K3
- text
Pricing & capacity
| Pricing & capacity | GPT-5.2 Pro | Kimi K3 |
|---|---|---|
| Input / 1M tokens | $21 | $3.00 |
| Output / 1M tokens | $168 | $12 |
| Cached input / 1M | Not listed | $0.43 |
| Monthly cost | $1,260 | $122 |
| Context window | 400K | 1M |
| Maximum output | 128K | 944K |
Input / 1M tokens
- GPT-5.2 Pro
- $21
- Kimi K3
- $3.00
Output / 1M tokens
- GPT-5.2 Pro
- $168
- Kimi K3
- $12
Cached input / 1M
- GPT-5.2 Pro
- Not listed
- Kimi K3
- $0.43
Monthly cost
- GPT-5.2 Pro
- $1,260
- Kimi K3
- $122
Context window
- GPT-5.2 Pro
- 400K
- Kimi K3
- 1M
Maximum output
- GPT-5.2 Pro
- 128K
- Kimi K3
- 944K
Benchmarks & performance
| Benchmarks & performance | GPT-5.2 Pro | Kimi K3 |
|---|---|---|
| Arena Elo | 1,255 | Not listed |
| MMLU-Pro | 82.8% | Not listed |
| Intelligence Index | Not listed | 43.6 |
| GPQA | Not listed | 93.5% |
| Humanity’s Last Exam | Not listed | 46.9% |
| SciCode | Not listed | 59.5% |
| Output speed | Not listed | 45 tokens/s |
| Time to first token | Not listed | 3.83 s |
| DesignArena rating | Not listed | 1,368 |
| DesignArena win rate | Not listed | 63.1% |
Arena Elo
- GPT-5.2 Pro
- 1,255
- Kimi K3
- Not listed
MMLU-Pro
- GPT-5.2 Pro
- 82.8%
- Kimi K3
- Not listed
Intelligence Index
- GPT-5.2 Pro
- Not listed
- Kimi K3
- 43.6
GPQA
- GPT-5.2 Pro
- Not listed
- Kimi K3
- 93.5%
Humanity’s Last Exam
- GPT-5.2 Pro
- Not listed
- Kimi K3
- 46.9%
SciCode
- GPT-5.2 Pro
- Not listed
- Kimi K3
- 59.5%
Output speed
- GPT-5.2 Pro
- Not listed
- Kimi K3
- 45 tokens/s
Time to first token
- GPT-5.2 Pro
- Not listed
- Kimi K3
- 3.83 s
DesignArena rating
- GPT-5.2 Pro
- Not listed
- Kimi K3
- 1,368
DesignArena win rate
- GPT-5.2 Pro
- Not listed
- Kimi K3
- 63.1%
Tools & features
| Tools & features | GPT-5.2 Pro | Kimi K3 |
|---|---|---|
| Function calling | Supported | Supported |
| Structured outputs | Supported | Supported |
| JSON mode | Supported | Supported |
| Reasoning | Supported | Supported |
| Log probabilities | Not listed | Supported |
| Deterministic seed | Supported | Supported |
| Prompt caching | Not listed | Supported |
Function calling
- GPT-5.2 Pro
- Supported
- Kimi K3
- Supported
Structured outputs
- GPT-5.2 Pro
- Supported
- Kimi K3
- Supported
JSON mode
- GPT-5.2 Pro
- Supported
- Kimi K3
- Supported
Reasoning
- GPT-5.2 Pro
- Supported
- Kimi K3
- Supported
Log probabilities
- GPT-5.2 Pro
- Not listed
- Kimi K3
- Supported
Deterministic seed
- GPT-5.2 Pro
- Supported
- Kimi K3
- Supported
Prompt caching
- GPT-5.2 Pro
- Not listed
- Kimi K3
- Supported
API & availability
| API & availability | GPT-5.2 Pro | Kimi K3 |
|---|---|---|
| API identifier | gpt-5.2-pro | kimi-k3 |
| API providers | OpenAI | Not listed |
| Prices checked | Oct 8, 2026 | Oct 8, 2026 |
API identifier
- GPT-5.2 Pro
gpt-5.2-pro- Kimi K3
kimi-k3
API providers
- GPT-5.2 Pro
- OpenAI
- Kimi K3
- Not listed
Prices checked
- GPT-5.2 Pro
- Oct 8, 2026
- Kimi K3
- Oct 8, 2026
About the models
GPT-5.2 Pro
GPT-5.2 with extra compute for the most demanding problems. No cached-input discount.
Full pricing & detailsKimi K3
Kimi K3 is a 2.8T parameter open-weight multimodal reasoning model from Moonshot AI. It is suited for complex coding, knowledge work, and long-horizon agentic workflows, and is particularly strong at...
Full pricing & detailsComparison FAQ
GPT-5.2 Pro: $21 input and $168 output per million tokens. Kimi K3: $3.00 input and $12 output per million tokens. The cheaper choice depends on your input-to-output ratio; a model can have a lower input rate but a higher output rate.