GPT-5.2 Pro overview
GPT-5.2 Pro by OpenAI
With enhanced long-context understanding, premium vision capabilities, and robust tool integration, it excels in coding and data analysis.
GPT-5.2 Pro specs
- Model ID
openai/gpt-5.2-pro- Developer
- OpenAI
- Context window
- 400,000 tokens
- Max output
- 128,000 tokens
- Input
- Text
- Output
- Text
- API
- OpenAI-compatible, base URL
https://api.aimlapi.com/v1
GPT-5.2 Pro Overview
GPT-5.2 Pro represents OpenAI's most advanced reasoning language model, engineered for tackling intricate queries that demand superior accuracy and reliability. It excels as the smartest, most trustworthy choice for challenging problems, delivering higher-quality responses worth the processing time, with early tests revealing fewer critical errors and exceptional strength in domains like programming and complex analysis.
Technical Specifications
- Architecture: Multimodal transformer LLM with advanced mixture-of-experts scaling
- Capabilities: Chat, reasoning, vision processing, JSON mode
- Training Data: Curated web-scale data through mid-2025 + synthetic reasoning augmentation
- Reasoning Effort Levels: Supports
none,low,medium,high, andxhigh
Performance Benchmarks
- Complex Reasoning (Programming & Logic): Superior error reduction on multi-step coding challenges and symbolic deduction
- Multimodal Understanding: Enhanced accuracy in image analysis and mixed-media reasoning tasks
- Long-Context Retention: Maintains coherence across 100K+ token conversations
Output Quality & Reasoning Performance
Early testers report dramatic improvements in response reliability, structured problem-solving transparency, and domain-specific expertise, particularly in software engineering and analytical workflows.
Quality Improvements
- Sustained logical consistency across extended reasoning chains exceeding 100K tokens.
- Proactive error detection and self-correction mechanisms reduce hallucination rates significantly.
- Domain mastery in programming, mathematics, and technical analysis surpasses GPT-5 benchmarks.
- Balanced precision with natural conversational flow, minimizing robotic outputs or factual drift.
New Features & Technical Upgrades
GPT-5.2 Pro introduces breakthrough reasoning architecture and safety optimizations for unmatched reliability across demanding applications.
Use cases
Tough problems that may take longer to solve but require harder thinking.
Difficult questions where a higher-quality answer is worth the wait.
Complex domains like programming, where it shows fewer major errors and stronger performance.
Professional work requiring smarter and more precise responses.
Capabilities
- Function calling
- Streaming
- Structured outputs
- Reasoning
- Web search
GPT-5.2 Pro API pricing
| Usage | Price | Unit |
|---|---|---|
| Input | $22.22 | 1M tokens |
| Output | $177.74 | 1M tokens |
Prices from the AI/ML API price list, checked on Nov 4, 2026.
GPT-5.2 Pro vs other models: token prices
AI/ML API input and output rates for 5 models, per million tokens.
| Model | Input | Output |
|---|---|---|
 GPT-5.2 Pro | $22.22 | $177.74 |
| GPT-6 Luna | $0.1 | $0.5 |
| GPT-6.1 Terra | $1 | $5 |
| GPT-6.1 Sol | $2 | $10 |
| GPT-6.1 Terra Pro | $2.12 | $10.58 |
How to use the GPT-5.2 Pro API
View docs
Build with your agent
Give your agent the model details, code and documentation.
1Get your API key
Create API keyexport AIMLAPI_KEY="8f2b4c7d9a1e6b3f…"2Make your first request
curl 'https://api.aimlapi.com/v1/chat/completions' \
-H "Authorization: Bearer $AIMLAPI_KEY" \
-H 'Content-Type: application/json' \
-d '{
"model": "openai/gpt-5.2-pro",
"messages": [
{
"role": "user",
"content": "Write a haiku about the ocean."
}
]
}'import os
import requests
headers = {
"Authorization": f"Bearer {os.environ['AIMLAPI_KEY']}",
"Content-Type": "application/json",
}
payload = {
"model": "openai/gpt-5.2-pro",
"messages": [
{
"role": "user",
"content": "Write a haiku about the ocean."
}
]
}
response = requests.post("https://api.aimlapi.com/v1/chat/completions", headers=headers, json=payload, timeout=120)
response.raise_for_status()
print(response.json())const response = await fetch("https://api.aimlapi.com/v1/chat/completions", {
method: "POST",
headers: {
Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
"model": "openai/gpt-5.2-pro",
"messages": [
{
"role": "user",
"content": "Write a haiku about the ocean."
}
]
}),
});
if (!response.ok) throw new Error(`HTTP ${response.status}`);
console.log(await response.json());Models similar to GPT-5.2 Pro
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GPT-5.2 Pro FAQ
What is the context window of GPT-5.2 Pro?
GPT-5.2 Pro has a 400,000 tokens context window and can return up to 128,000 tokens.
What inputs and outputs does GPT-5.2 Pro support?
GPT-5.2 Pro takes image, text as input and returns text.
What is the model ID for GPT-5.2 Pro?
Use openai/gpt-5.2-pro as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.
How much does GPT-5.2 Pro cost?
GPT-5.2 Pro costs $22.22 input and $177.74 output per 1M tokens on AI/ML API, billed as you go with no subscription.
Does GPT-5.2 Pro support streaming?
Yes, GPT-5.2 Pro can stream responses as they are generated.
Can GPT-5.2 Pro read images?
Yes, GPT-5.2 Pro accepts image input alongside text.
Who created GPT-5.2 Pro?
GPT-5.2 Pro was built by OpenAI.