---
title: OpenAI: GPT-5.2 — Advanced LLM | ModelsLab
description: Access OpenAI: GPT-5.2 API for superior reasoning, long-context handling, and agentic tasks. Generate complex outputs via ModelsLab endpoints today.
url: https://modelslab-frontend-v2-927501783998.us-east4.run.app/openai-gpt-52
canonical: https://modelslab-frontend-v2-927501783998.us-east4.run.app/openai-gpt-52
type: website
component: Seo/ModelPage
generated_at: 2026-05-13T10:34:48.389941Z
---

Available now on ModelsLab · Language Model

OpenAI: GPT-5.2
OpenAI GPT-5.2 Power
---

[Try OpenAI: GPT-5.2](/models/open_router/openai-gpt-5.2) [API Documentation](https://docs.modelslab.com)

Deploy GPT-5.2 Capabilities
---

Long-Context Mastery

### 256k Token Accuracy

Handles massive documents with near-100% recall on 4-needle MRCR at 256k tokens.

Agentic Reasoning

### Multi-Step Task Chains

Decomposes complex tasks into explainable plans with tool calling and fewer errors.

Pro Coding Agent

### Refactors Large Repos

Manages extended sessions for code migrations, refactors, and cybersecurity tasks.

Examples

See what OpenAI: GPT-5.2 can create
---

Copy any prompt below and try it yourself in the [playground](/models/open_router/openai-gpt-5.2).

Document Analysis

“Analyze this 200k-token financial report: extract key trends, build comparison table of loan terms across 50 documents, generate evidence-based summary of risks and opportunities.”

Code Refactor

“Refactor this 50k-line Python codebase for async operations: migrate to new API endpoints, add unit tests, handle edge cases, output deployment script.”

Research Synthesis

“Synthesize insights from these 100k tokens of telecom papers: create structured evidence table, narrative on trends/gaps, prioritize actionable recommendations.”

Spreadsheet Build

“From project briefs and meeting notes (150k tokens), generate Excel spreadsheet with budget forecasts, task timelines, and variance analysis.”

For Developers

A few lines of code.
GPT-5.2. One API call.
---

ModelsLab handles the infrastructure: fast inference, auto-scaling, and a developer-friendly API. No GPU management needed.

- **Serverless:** scales to zero, scales to millions
- **Pay per token,** no minimums
- **Python and JavaScript SDKs,** plus REST API

[API Documentation ](https://docs.modelslab.com)

PythonJavaScriptcURL

Copy

```
<code>import requests

response = requests.post(
    "https://modelslab.com/api/v7/llm/chat/completions",
    json={
  "key": "YOUR_API_KEY",
  "prompt": "",
  "model_id": ""
}
)
print(response.json())</code>
```

FAQ

Common questions about OpenAI: GPT-5.2
---

[Read the docs ](https://docs.modelslab.com)

### What is OpenAI: GPT-5.2 API?

OpenAI: GPT-5.2 API provides access to the flagship reasoning model for professional tasks. It excels in long-context understanding up to 400k tokens. Use via ModelsLab LLM endpoints.

### How does openai gpt 5.2 model improve reasoning?

OpenAI: GPT-5.2 model achieves 52.9% on ARC-AGI-2 with chain-of-thought. It reduces hallucinations by 30% and handles multi-step logical chains. Beats prior models on GDPval across 44 occupations.

### Is OpenAI: GPT-5.2 alternative available?

ModelsLab offers OpenAI: GPT-5.2 alternative via compatible LLM endpoints. Matches capabilities like agentic tool-calling and vision. Integrates seamlessly for enterprise workflows.

### What context window for openai: gpt-5.2 model?

OpenAI: GPT-5.2 model supports 400k input tokens and 128k output. Excels at 256k long-context tasks with 98.7% tool accuracy. Ideal for large repos and documents.

### Does openai gpt 5.2 api support streaming?

Yes, openai gpt 5.2 api supports streaming and function calling. Includes structured outputs and reasoning.effort levels from none to xhigh. Optimized for low-latency professional use.

### Key strengths of OpenAI: GPT-5.2 LLM?

OpenAI: GPT-5.2 LLM leads in agentic coding, document analysis, and vision tasks. Near-perfect long-context recall and faster specialist reasoning. Designed for knowledge work saving 40-60 minutes daily.

Ready to create?
---

Start generating with OpenAI: GPT-5.2 on ModelsLab.

[Try OpenAI: GPT-5.2](/models/open_router/openai-gpt-5.2) [API Documentation](https://docs.modelslab.com)

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*This markdown version is optimized for AI agents and LLMs.*

**Links:**
- [Website](https://modelslab.com)
- [API Documentation](https://docs.modelslab.com)
- [Blog](https://modelslab.com/blog)

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*Generated by ModelsLab - 2026-05-13*