GPT-5.6 Sol sits at the top of the GPT-5.6 family OpenAI released on July 9, 2026, the generation that split the lineup into named capability tiers with Sol as the frontier flagship. It works across a 1.05 million token context with up to 128K output tokens, and it leads the family on long-horizon agentic evaluations covering terminal work, web browsing, and computer use. Sol is the tier for the hardest problems, complex software engineering, deep research, security analysis, and agent runs that stretch over many steps and hours. Reasoning, vision, tool calling, and structured output are all native, and its near-flagship long-context recall makes it dependable when entire codebases or document collections need to stay in play.
GPT-5.6 Sol runs on 6 different routes through the Opper gateway. Compare residency, ZDR, and training posture at a glance — full data-handling detail per route below.
GPT-5.6 Sol runs on 3 independently monitored routes through the Opper gateway. A direct integration leaves you on one of them, the gateway serves whichever is healthy.
Measured over the last 30 days from each provider's official status feed via StatusGator. Refreshed hourly. See uptime for every provider Opper monitors.
Each route hosting GPT-5.6 Sol has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.
Zero data retention is on by default on Pay-as-you-go — no action required. No training on customer data. GLOBAL; SCCs; DPA available.
Zero data retention is on by default on Pay-as-you-go — no action required. No training on customer data. EU; DPA available.
Zero data retention is on by default on Pay-as-you-go — no action required. No training on customer data. GLOBAL; SCCs; DPA available.
Zero data retention is not on by default — abuse monitoring, 30-day retention. No training on customer data. EU; DPA available.
Zero data retention is not on by default — abuse monitoring, 30-day retention. No training on customer data. GLOBAL; SCCs; DPA available.
Zero data retention is not on by default — abuse monitoring, 30-day retention. No training on customer data. US; SCCs; DPA available.
Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.
Call GPT-5.6 Sol 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 a coding agent like Claude Code, Cursor or Codex 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-5.6-sol",messages: [{ role: "user", content: "Hello" }],});console.log(completion.choices[0].message.content);
Side-by-side on privacy, EU hosting, pricing, and benchmarks.
