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GPT-5.5 Pro

openai/gpt-5.5-pro

Pro version of GPT-5.5 (April 2026) that spends extra compute for more precise answers; medium, high (default) and xhigh effort, Responses and Batch APIs only. OpenAI's latest standalone Pro model; for GPT-5.6 Sol it offers a pro reasoning mode instead.

Get API KeyRead the Docs
API
curl "$AUDIOLAB_API_URL/v1/responses" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "openai/gpt-5.5-pro",
  "input": "Help me plan my next project.",
  "max_output_tokens": 256,
  "store": false
}'
Read docs
Input Price
$25.50 / 1M tokens
Output Price
$153.00 / 1M tokens
Context
1.1M tokens
Output Cap
128K tokens

Capabilities

Explore what GPT-5.5 Pro supports, then use the API section for a request tailored to this model.

Max tokensToolsTool choiceReasoningStructured outputs

Model Information

Provider
OpenAI
Product
Language Models
Release Date
Apr 23, 2026
Data Policy
No training
Region
Global
Input
Text
Output
Text
Provider Documentation

Playground

Try GPT-5.5 Pro by OpenAI. Requests use the selected workspace’s credits and API pricing.

GPT-5.5 ProCredits —
GPT-5.5 Pro
This model uses a dedicated input format. Explore its API example or open the supported playground.
View API reference
Sign in to run a requestAPI reference

Providers

Compare available endpoints, pricing, and context limits for GPT-5.5 Pro.

ProviderContextOutput CapInput PriceOutput PriceEndpoint
OpenAI1.1M tokens128K tokens$25.50 / 1M tokens$153.00 / 1M tokens
gpt-5.5-pro-2026-04-23

Prices are catalog rates. Your workspace’s estimate and endpoint pricing determine the final charge.

Input and Output Limits

Formats and limits AudioLab enforces on each request.

LimitValue
Max input tokens1050000
Max output tokens128000

Provider Notes

General LLM inference is an integration preview. Managed billing and deployment acceptance must be enabled before requests can be served.

Performance

Status

Current catalog availability. Your workspace’s access is checked separately before a request runs.

Getting Started

Use your workspace API key and the exact model identifier below. Set the API URL to the endpoint shown in your workspace and keep credentials on your server.

API
curl "$AUDIOLAB_API_URL/v1/responses" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "openai/gpt-5.5-pro",
  "input": "Help me plan my next project.",
  "max_output_tokens": 256,
  "store": false
}'
Read docs
Read the Endpoint Reference

Request Parameters

Available parameters depend on the provider and request format. The endpoint reference explains accepted values and required fields.

ParameterDetails
modelopenai/gpt-5.5-pro — Required model identifier.
max_tokensView Accepted Values
toolsView Accepted Values
tool_choiceView Accepted Values
reasoningView Accepted Values
structured_outputsView Accepted Values

Input and Output Limits

Formats and limits AudioLab enforces on each request.

LimitValue
Max input tokens1050000
Max output tokens128000

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ModelContextInput PriceOutput Price
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GPT-6 LunaOpenAI1.1M tokens$0.085 / 1M tokens$0.425 / 1M tokens
GPT-6 SolOpenAI1.1M tokens$1.70 / 1M tokens$8.50 / 1M tokens
GPT-6 AstraOpenAI1.1M tokens$8.50 / 1M tokens$42.50 / 1M tokens
GPT-5.6 LunaOpenAI1.1M tokens$0.17 / 1M tokens$1.02 / 1M tokens
GPT-5.6 SolOpenAI1.1M tokens$3.40 / 1M tokens$17.00 / 1M tokens
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