GPT-5.1 Chat Latest is a chat-tuned variant of GPT-5.1 with a 128,000-token context window, balancing capability with the responsiveness conversational apps need. It supports vision input, tool use, and structured outputs. The variant is suited to interactive applications and multi-turn dialogue, where it holds context across a conversation while staying focused on back-and-forth exchanges.
GPT-5.1 Chat Latest runs on 1 route through the Opper gateway. Compare residency, ZDR, and training posture at a glance — full data-handling detail per route below.
| Provider | Region | Zero data retention | Training | Input | Output |
|---|---|---|---|---|---|
| OpenAI | US | Enterprise | No | $1.25 | $10.00 |
Training posture across routes: No training on prompts by default.
Each route hosting GPT-5.1 Chat Latest has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.
Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.
Call GPT-5.1 Chat Latest through the Opper gateway with one API key. Let your coding agent set it up, or call it directly — Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.
Copy this and paste it into your coding agent — Claude Code, Cursor, Codex, and more — and it'll wire up Opper for you.
import OpenAI from "openai";const client = new OpenAI({apiKey: process.env.OPPER_API_KEY,baseURL: "https://api.opper.ai/v3/compat",});const completion = await client.chat.completions.create({model: "openai/gpt-5.1-chat-latest",messages: [{ role: "user", content: "Hello" }],});console.log(completion.choices[0].message.content);
Side-by-side on privacy, EU hosting, pricing, and benchmarks.
