GPT-5.6 Sol Pro is the highest-capability GPT-5.6 option for difficult tasks and longer-running workflows. OpenAI says Pro and Enterprise users can select GPT-5.6 Sol Pro for the highest-quality results on complex tasks.
| Developer | Open AI |
|---|---|
| Model ID | openai/gpt-5.6-sol-pro |
| Release Date | July 8, 2026 |
| Context Window | 1,050,000 tokens (~1.1M) |
| Max Output Tokens | 128,000 tokens |
| Modalities | Image, Text → Text |
| Capabilities | file input, parallel tool calls, reasoning, streaming, structured (JSON schema) output, tool/function calling, vision |
Highest-capability GPT-5.6 option
OpenAI describes GPT-5.6 Sol Pro as the top GPT-5.6 choice for difficult tasks and longer-running workflows.
Pro-tier availability
OpenAI says GPT-5.6 Sol Pro powers Pro in ChatGPT.
Separate from GPT-5.6 Sol
OpenAI presents GPT-5.6 Sol Pro as a distinct option within the GPT-5.6 lineup, alongside GPT-5.6 Sol.
Optimized for complex work
OpenAI frames the model as intended for the highest-quality results on complex tasks.
ChatGPT positioning
OpenAI’s ChatGPT help materials identify GPT-5.6 Sol Pro as the highest-capability GPT-5.6 option.
Difficult tasks
Use GPT-5.6 Sol Pro for difficult tasks where OpenAI positions it as the highest-capability GPT-5.6 option.
Longer-running workflows
Use GPT-5.6 Sol Pro for longer-running workflows, which OpenAI explicitly calls out in its help documentation.
Complex tasks in ChatGPT
OpenAI says Pro and Enterprise users can select GPT-5.6 Sol Pro for the highest-quality results on complex tasks.
GPT-5.6 Sol
OpenAI’s materials distinguish GPT-5.6 Sol from GPT-5.6 Sol Pro, with Sol Pro positioned as the highest-capability option.
Sources: https://openai.com/index/gpt-5-6/ · https://developers.openai.com/api/docs/models/gpt-5.6-sol · https://help.openai.com/en/articles/20001325
Measured on the AI/ML API gateway across live traffic. Figures are medians unless stated. Last updated 2026-10-12.
Difficult tasks and longer-running workflows are the documented fit for GPT-5.6 Sol Pro.
It is suited to coding work, including secure code review, patching, debugging, and high-value coding or review tasks.
It is also suited to cybersecurity work, including threat modeling, blue teaming, vulnerability research, exploitation, and defensive testing.
It is documented for knowledge work and research, including complex professional analysis and research synthesis.
import requests r = requests.post( "https://api.aimlapi.com/v1/chat/completions", headers={"Authorization": "Bearer " + AIMLAPI_KEY}, json={ "model": "openai/gpt-5.6-sol-pro", "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-pro", "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-pro","messages":[{"role":"user","content":"Hello!"}]}'
OpenAI-compatible — swap the base URL and it works with your existing SDK.
| Type | Price |
|---|---|
| Input | |
| Output | |
| Cached input |
GPT-5.6 Sol Pro is not available on the Free plan, and GPT-5.6 Sol’s promotional pricing is available at least through November 21, 2026.
| Model | Input | Output | Context | Best for |
|---|---|---|---|---|
GPT-5.6 Sol Pro This page | Agentic workflows and structured output |
GPT-5.6 Sol Pro has a 1,050,000 tokens context window and can return up to 128,000 tokens.
GPT-5.6 Sol Pro takes image, text as input and returns text.
Use openai/gpt-5.6-sol-pro as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.
GPT-5.6 Sol Pro became available on July 9, 2026.
GPT-5.6 Sol Pro is priced at input $5.5016 / 1M tokens, output $27.508 / 1M tokens, cached input $0.55016 / 1M tokens.
Yes, GPT-5.6 Sol Pro can stream responses as they are generated.
Yes, GPT-5.6 Sol Pro accepts image input alongside text.
GPT-5.6 Sol Pro was built by OpenAI.
It supports reasoning, vision, file input, tool use, parallel tool calls, and structured output, making it suited for complex text and image-based tasks requiring tool integration.
