GPT-5.6 Sol

proprietary

GPT-5.6 Sol is a flagship model in the GPT-5.6 family. It roughly corresponds to the unsuffixed model tier used in earlier GPT-5 families. The `gpt-5.6` alias routes requests to GPT-5.6 Sol. Reasoning.effort supports: none, low, medium (default), high, xhigh, and max.

Intelligence
Reasoning
Speed
Context
1.1M
Max output
128K
Input price
$4/1M tokens
Output price
$20/1M tokens
Alias ofgpt-daybreak-blue-latest

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing

Details

Model IDgpt-5.6-sol
Provider OpenAI
Creator openai
Familygpt-5.6
Licenseproprietary
Statusactive
Typechat
Input modalitiestext, image
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window1.1M tokens
Max input922K tokens
Max output128K tokens
Reasoning tokensYes
Knowledge cutoff
Release date—
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Endpoints

ResponsesPOST
Stateful multi-turn conversationshttps://api.openai.com/v1/responses

Pricing

Text tokensPer 1M tokens
InputOutputCached input30m write12h write
Standard$4$20$0.4$5$10
Batch$2$10$0.2$2.5$5
Fast$8$40$0.8$10$20

Family Comparison: gpt-5.6

ModelContextMax outPricing
GPT-5.6 Luna1.1M128K$0.2$1.2
GPT-5.6 Terra1.1M128K$2$12

API

GET/v1/models/openai/gpt-5.6-sol

GPT-5.6 Sol

gpt-5.6-sol

GPT-5.6 Sol is a flagship model in the GPT-5.6 family. It roughly corresponds to the unsuffixed model tier used in earlier GPT-5 families. The `gpt-5.6` alias routes requests to GPT-5.6 Sol. Reasoning.effort supports: none, low, medium (default), high, xhigh, and max.

alias → gpt-daybreak-blue-latestgpt-5.6-sol
Changes · 6 entries
gpt-5.6-solcreateca7a400Nov 2, 2026, 03:02 AM
gpt-5.6-solupdate4e8b6afOct 21, 2026, 06:35 AM
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
gpt-5.6-solupdateb61df6aOct 7, 2026, 06:39 AM
page_urlhttps://developers.openai.com/api/docs/models/gpt-5.6-sol→https://developers.openai.com/api/docs/models/gpt-daybrea...
tools["web_search","file_search","image_generation","code_inte...→["function_calling"]
endpoints["chat_completions","responses","batch"]→["responses"]
gpt-5.6-solupdate6e8bf55Sep 30, 2026, 06:40 AM
taglineFlagship model for complex professional work→GPT-5.6 flagship model for complex professional work
gpt-5.6-solupdate118451aSep 24, 2026, 07:08 AM
namegpt-5.6-sol→GPT-5.6 Sol
pricinginput$5→$4output$30→$20cached input$0.5→$0.4tiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...batch input$2batch output$10
tools["function_calling"]→["web_search","file_search","image_generation","code_inte...
endpoints["responses","chat_completions","batch"]→["chat_completions","responses","batch"]
descriptionGPT-5.6 Sol is a flagship model in the GPT-5.6 family. It...
aliasgpt-daybreak-blue-latest
taglineFlagship model for complex professional work
snapshots["gpt-5.6-sol"]
gpt-5.6-solcreate105275dJul 10, 2026, 12:00 AM