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OpenAI: GPT-5.6 Sol
openai/gpt-5.6-solTry OpenAI: GPT-5.6 Sol now
Runs on your balance at the prices above. New accounts start with free usage.
One API. Every model.
Session cost $0.00
Settings
Advanced parameters
OpenAI: GPT-5.6 Sol at a glance
- Input price is 789% higher than the median of 434 Text models.
- Context window of 1,050,000 tokens, enough for long documents and multi-turn conversations.
- Supports tool (function) calling for agents and integrations.
- Supports structured JSON output with a schema.
- Supports reasoning effort control.
- Accepts images as input (vision).
- A typical request (1,000 input / 500 output tokens) costs about $0.05.
About OpenAI: GPT-5.6 Sol
GPT-5.6 Sol is a text model from OpenAI and the flagship entry in the GPT-5.6 series. It was released by the provider on 9 July 2026, and its knowledge cutoff is 16 February 2026. On api14 it is listed under the model id openai/gpt-5.6-sol and sits in the text category, so it is aimed at language work rather than audio or video generation.
The model accepts text, images and files as input, and it returns text only. Its context window is 1,050,000 tokens, which is large enough to hold very long documents, whole repositories of source files or extended conversation histories in a single request. The maximum output is 128,000 tokens, so responses can be long as well as grounded in a large input. Because images and files are accepted alongside text, you can mix prose, screenshots, diagrams and uploaded documents in the same prompt.
Those capabilities point to a fairly specific set of uses. OpenAI describes the model as suited to complex reasoning, coding and agentic workflows, and notes that it is particularly strong at command-line and multi-step coding tasks. In practice that means tasks such as working through a multi-stage refactor across many files, planning and executing a sequence of tool calls, or reasoning over a long specification together with supporting screenshots and attachments. The combination of a very large context window and a large output budget also fits summarisation or analysis of long reports, where the source material and the answer both need room.
You call it through api14's OpenAI-compatible API using the model id openai/gpt-5.6-sol, so existing OpenAI client libraries and request shapes work without changes. The supported request parameters are include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, tool_choice, tools and verbosity. The reasoning and reasoning_effort parameters let you control how much internal reasoning the model applies, while tools and tool_choice support function calling for agent-style loops. If you need deterministic or machine-readable output, seed, response_format and structured_outputs are available, and verbosity adjusts how much the model says.
Since the model outputs text only, it is not the right choice if you need generated images, audio or video. It is also a reasoning-oriented flagship, so for simple, high-volume text transformations a lighter model may be a better fit. Where the task involves long inputs, images or files, multi-step tool use, or careful reasoning over code, this model is the one to reach for.
How to call the OpenAI: GPT-5.6 Sol API
- Create an API key in your dashboard.
- Install the official openai SDK for your language.
- Set baseURL to https://api14.com/api/v1 and model to "openai/gpt-5.6-sol".
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api14.com/api/v1",
apiKey: process.env.API14_API_KEY,
});
const result = await client.chat.completions.create({
"model": "openai/gpt-5.6-sol",
"messages": [
{
"role": "user",
"content": "Explain vector databases in two sentences."
}
]
});
console.log(result.choices[0].message.content);
Supported parameters
include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetoolsverbositySpecifications
- Context length
- 1,050,000
- Max output
- 128,000
- Input
- file, image, text
- Output
- text
- Knowledge cutoff
- 2026-02-16
Requests on api14 · last 7 days
OpenAI: GPT-5.6 Sol: frequently asked questions
- How much does the OpenAI: GPT-5.6 Sol API cost?
- OpenAI: GPT-5.6 Sol costs Input $14.00 / 1M tokens. It is charged from your USD balance only for successful requests; failed requests are free.
- What is the context window of OpenAI: GPT-5.6 Sol?
- OpenAI: GPT-5.6 Sol reads up to 1,050,000 tokens per request: prompt, history and documents together. It writes up to 128,000 output tokens per response.
- What can OpenAI: GPT-5.6 Sol do?
- OpenAI: GPT-5.6 Sol accepts file, image, text and returns text. It supports tool calling, structured JSON output, reasoning effort control.
- How do I call OpenAI: GPT-5.6 Sol from my code?
- Point any OpenAI SDK at https://api14.com/api/v1 and set the model to "openai/gpt-5.6-sol". No other code changes. Copy a ready example from the code panel on this page.
- What are alternatives to OpenAI: GPT-5.6 Sol?
- Comparable Text models at a similar price: Meta: Muse Wonder, Anthropic: Claude Opus 5.5, OpenAI: GPT-5.6 Sol Pro. Each runs through the same API key, so switching is one string.
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