openai/gpt-5.6-sol
250K context · $1.00 / M input tokens · $6.00 / M output tokens
GPT-5.6 Sol is the flagship route in the GPT-5.6 family for demanding reasoning, coding, tool use, and agent workflows, available through OurToken at 20% of official pricing.
Explore GPT-5.6 models
2026-07-10 07:19:32 UTC
Pricing
Pay-per-use
No upfront costs, pay only for what you use
API Usage
API Access Guide
Code examples
Use the OurToken API endpoint for this model. The examples below use direct HTTP requests and the recommended endpoint for the model family.
curl https://api.ourtoken.ai/v1/responses \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "gpt-5.6-sol",
"input": "Hello!",
"max_output_tokens": 256
}'Responses API Reference
Create a model response with the OpenAI Responses-compatible endpoint. This format supports text input, message arrays, tools, reasoning controls, and multi-turn response continuation.
Authorization
| Content-Type | application/json |
| Authorization | Bearer YOUR_API_KEY |
Request Body
| Field | Type | Required | Description |
|---|---|---|---|
| model | string | Required | Model ID to call. |
| input | string | array<object> | Optional | Input content as a string or a structured message array. |
| instructions | string | Optional | System or developer instructions applied to the response. |
| max_output_tokens | integer | Optional | Maximum number of output tokens the model may generate. |
| temperature | number | Optional | Sampling temperature. |
| top_p | number | Optional | Nucleus sampling parameter. |
| stream | boolean | Optional | Whether to return a streaming response. |
| tools | array<object> | Optional | Tools available to the model. |
| tool_choice | string | object | Optional | Controls how the model selects tools. |
| reasoning | object | Optional | Reasoning configuration for models that support it. |
| previous_response_id | string | Optional | Previous response ID for continuing a conversation. |
| truncation | "auto" | "disabled" | Optional | Controls automatic context truncation. |
Response Body
| Field | Type | Required | Description |
|---|---|---|---|
| id | string | Required | Unique response identifier. |
| object | "response" | Required | Object type returned by the Responses API. |
| created_at | integer | Required | Unix timestamp when the response was created. |
| status | string | Required | Response lifecycle status. |
| model | string | Required | Model that produced the response. |
| output | array<object> | Required | Array of output items returned by the model. |
| output[].content[].text | string | Optional | Text content inside an output message item. |
| usage | object | Optional | Token usage information for the response. |
| usage.prompt_tokens | integer | Optional | Input token count. |
| usage.completion_tokens | integer | Optional | Output token count. |
| usage.total_tokens | integer | Optional | Total token count. |
| usage.prompt_tokens_details | object | Optional | Breakdown of input token usage. |
| usage.prompt_tokens_details.cached_tokens | integer | Optional | Tokens served from cache. |
| usage.prompt_tokens_details.text_tokens | integer | Optional | Text token count. |
| usage.prompt_tokens_details.audio_tokens | integer | Optional | Audio token count. |
| usage.prompt_tokens_details.image_tokens | integer | Optional | Image token count. |
| usage.completion_tokens_details | object | Optional | Breakdown of output token usage. |
| usage.completion_tokens_details.text_tokens | integer | Optional | Text token count. |
| usage.completion_tokens_details.audio_tokens | integer | Optional | Audio token count. |
| usage.completion_tokens_details.reasoning_tokens | integer | Optional | Reasoning token count. |
Model Introduction
OpenAI gpt-5.6-sol
GPT-5.6 Sol is the flagship route in the GPT-5.6 family for demanding reasoning, coding, tool use, and agent workflows, available through OurToken at 20% of official pricing.
GPT-5.6 Sol API is designed for developers who prioritize capability on complex software, research, analysis, and multi-step automation tasks. OurToken provides the gpt-5.6-sol model through an OpenAI-compatible API with transparent input, output, cached input, and cache write pricing.
Why It Looks Great
- Highest-capability positioning within the GPT-5.6 Sol, Terra, and Luna family.
- Strong fit for repository analysis, debugging, code generation, planning, and tool-driven agents.
- 250K context for substantial code, documents, instructions, and supporting evidence.
- Clear gpt 5.6 API pricing with separate cached input and cache write rates.
- Unified OurToken access for teams evaluating gpt 5.6 vs fable 5 and other frontier models.
Key Features
- Model ID: gpt-5.6-sol
- Context Window: 250000 tokens
- Max Output: 128000 tokens
- Input: Text and Image
- Output: Text
- Function Calling: Supported
- OurToken Price: $1/M input, $0.10/M cached input, $1.25/M cache writes, $6/M output
Specifications
GPT-5.6 Sol API Features for Advanced Workloads
Use GPT-5.6 Sol API for high-capability coding, reasoning, long-context analysis, tool use, and transparent gpt 5.6 sol pricing.
Flagship Reasoning Route
GPT 5.6 Sol is positioned for the most demanding tasks in the Sol, Terra, and Luna family. Use it when complex instructions, multi-step decisions, and difficult technical work require the strongest route rather than the lowest price.
Coding and Agent Workflows
Apply GPT-5.6 Sol API to repository review, debugging, refactoring, implementation planning, test generation, and agents that call tools across several steps.
250K Context Window
Process substantial code, specifications, research material, and conversation history in one request while reserving up to 128K tokens for detailed output.
Transparent API Pricing
Review gpt 5.6 sol pricing directly: $1 per million input tokens, $0.10 cached input, $1.25 cache writes, and $6 output on OurToken.
OpenAI-Compatible Access
Call gpt-5.6-sol through the OurToken Responses API using familiar authentication, request fields, streaming, tools, and structured application workflows.
Model Comparison Ready
Evaluate gpt 5.6 vs fable 5 or Sol versus Terra and Luna with repeatable prompts covering quality, latency, context use, tool reliability, and total cost.
How to Use GPT-5.6 Sol API on OurToken
Create a key, select gpt-5.6-sol, call the unified endpoint, and validate GPT 5.6 Sol quality and cost with production-like tests.
Create an API Key
Generate an OurToken API key from the dashboard and store it in a secure server-side environment variable.
01Select the Sol Model ID
Set the model field to gpt-5.6-sol so requests use the flagship GPT-5.6 Sol API route rather than Terra or Luna.
02Call the Responses API
Send requests to the OurToken OpenAI-compatible Responses endpoint with your input, instructions, tools, and output limits.
03Use Prompt Caching
Reuse stable prompt prefixes when possible. Cached input costs $0.10/M and new cache writes cost $1.25/M on the Sol route.
04Measure Quality and Latency
Test representative coding, reasoning, and agent tasks before production and compare answer quality, first-token latency, completion time, and token usage.
05Compare the GPT-5.6 Family
Move the same evaluation set between Sol, Terra, and Luna to decide whether Sol's capability justifies its higher gpt 5.6 pricing for each workload.
06GPT-5.6 Sol API FAQ
Answers about GPT 5.6 Sol API access, pricing, ChatGPT 5.6 searches, caching, model selection, and GPT 5.6 vs Fable 5 comparisons.