GPT-5.6 Sol API

openai/gpt-5.6-sol
GPT-5.6 Sol is a chat and code model from OpenAI. It handles text, image, and file inputs with text output, supports a 1,050,000-token context window, and combines reasoning with function calling and structured outputs. Max output is capped at 128,000 tokens, suiting long-document and multi-file coding tasks.
Context
1M tokens
Input
$5.2 / 1M tokens
Output
$26 / 1M tokens
Released
Jul 9, 2026

How to use GPT-5.6 Sol API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to openai/gpt-5.6-sol.

import requests

r = requests.post(
   "https://api.aimlapi.com/v1/chat/completions",
   headers={"Authorization": "Bearer " + AIMLAPI_KEY},
   json={
     "model": "openai/gpt-5.6-sol",
     "messages": [
       {
         "role": "user",
         "content": "Hello!"
       }
     ]
   },
)
print(r.json())

const r = 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-5.6-sol",
   "messages": [
     {
       "role": "user",
       "content": "Hello!"
     }
   ]
 }),
});
console.log(await r.json());

curl -X POST https://api.aimlapi.com/v1/chat/completions \
 -H "Authorization: Bearer $AIMLAPI_KEY" \
 -H "Content-Type: application/json" \
 -d '{"model":"openai/gpt-5.6-sol","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

GPT-5.6 Sol API Pricing

TypePrice
Input
$5.2 / 1M tokens
Output
$26 / 1M tokens
Cached input
$0.52 / 1M tokens

Prompt caching: cache reads get a 90% discount, cache writes are billed at 1.25x input rate. Free credits on signup.

GPT-5.6 Sol Benchmarks

BenchmarkScoreWhat it measuresSourceRetrieved
Intelligence
47.1
Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026
Coding
77.4
Composite score across standardised coding evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026

GPT-5.6 Sol vs other models

ModelInputOutputContextBest for
GPT-5.6 Sol
This page
$5.2 / 1M tokens
$26 / 1M tokens
1M tokens
Frontier reasoning + agents
$6.5 / 1M tokens
$39 / 1M tokens
1.05M tokens
Reasoning + agents
$6.877 / 1M tokens
$32.5 / 1M tokens
1M tokens
Chat + assistants
$13 / 1M tokens
$65 / 1M tokens
1M tokens
Chat + assistants
$2.6 / 1M tokens
$15.6 / 1M tokens
1M tokens
Coding + agents

Frequently asked questions

GPT-5.6 Sol has a 1,050,000 tokens context window and can return up to 128,000 tokens.

GPT-5.6 Sol takes text, image, file in as input and returns text out.

Use openai/gpt-5.6-sol as the model id.

GPT-5.6 Sol became available on July 9, 2026.

GPT-5.6 Sol is priced at input $5.2 / 1M tokens, output $26 / 1M tokens, cached input $0.52 / 1M tokens.

Yes, GPT-5.6 Sol can stream responses as they are generated.

Yes, GPT-5.6 Sol accepts image input alongside text.

GPT-5.6 Sol was built by OpenAI.

It's a chat and code model with reasoning, tool calling, vision, and structured output support.

Start building with GPT-5.6 Sol

Get API Key
1000+ models, one API.