GPT-5.2
OpenAIReleased Dec 10, 2025
GPT-5.2 is the latest frontier-grade model in the GPT-5 series, offering stronger agentic and long context perfomance compared to GPT-5.1. It uses adaptive reasoning to allocate computation dynamically, responding quickly...
- Context window
- 400K tokens
- Max output
- 128K tokens
- Input
- file, image, text
- Output
- text
- Tokenizer
- GPT
- Released
- Dec 10, 2025
- Reasoning
- optional
Pricing
Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.
| Per 1M tokens | Provider | + 3% fee | You pay |
|---|---|---|---|
| Input | $1.75 | $0.052 | $1.80 |
| Output | $14.00 | $0.420 | $14.42 |
| Cache read | $0.175 | $0.0052 | $0.180 |
Benchmarks
Design Arena
| Category | Elo | Win rate | Rank |
|---|---|---|---|
| Websitesmodels | 1237 | 54.5% | #34 |
| androidnativeagents | 1074 | 49.2% | #22 |
| Full-stackagents | 1110 | 44% | #21 |
| godotgamedevagents | 1183 | 48.1% | #13 |
| Mobile appsagents | 1173 | 47.4% | #23 |
| Web appsagents | 1156 | 45.7% | #19 |
| 3Dmodels | 1156 | 42% | #60 |
| Codemodels | 1219 | 50.2% | #42 |
| Data vizmodels | 1245 | 56.1% | #31 |
| Game devmodels | 1260 | 56% | #29 |
| UI componentsmodels | 1243 | 51.8% | #32 |
| ASCII artmodels | 1199 | 50.7% | #22 |
| SVGmodels | 1197 | 54% | #31 |
Head-to-head preference voting. How we filter and rank
Supported parameters
- include_reasoning
- max_completion_tokens
- max_tokens
- reasoning
- response_format
- seed
- structured_outputs
- tool_choice
- tools
Call it
OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model openai/gpt-5.2.
curl https://api.openkey.ai/v1/chat/completions \
-H "Authorization: Bearer $OPENKEY_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai/gpt-5.2",
"messages": [{"role": "user", "content": "Hello"}]
}'import os
from openai import OpenAI
client = OpenAI(
base_url="https://api.openkey.ai/v1",
api_key=os.environ["OPENKEY_API_KEY"],
)
completion = client.chat.completions.create(
model="openai/gpt-5.2",
messages=[{"role": "user", "content": "Hello"}],
)
print(completion.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.openkey.ai/v1",
apiKey: process.env.OPENKEY_API_KEY,
});
const completion = await client.chat.completions.create({
model: "openai/gpt-5.2",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);Questions
- How much does GPT-5.2 cost via API?
- Through OpenKey, GPT-5.2 costs $1.80 per 1M input tokens and $14.42 per 1M output tokens. That is the provider price ($1.75 / $14.00) plus a flat 3% fee — nothing else.
- What is GPT-5.2's context window?
- GPT-5.2 accepts up to 400K tokens of context and returns up to 128K tokens per request.
- Is GPT-5.2 OpenAI-compatible?
- Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "openai/gpt-5.2" using any OpenAI SDK — only the base URL and API key change.
- What inputs does GPT-5.2 support?
- GPT-5.2 accepts file, image, text input and produces text output.
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