GPT-5.5 Pro
OpenAIReleased Apr 23, 2026
- providers
- 1
- context
- 1.0M
- max out
- 128K
- input /M
- $30.00
- output /M
- $180.00
About
Drafted from the provider's own page.
GPT-5.5 Pro uses more compute to think harder and provide consistently better answers.
- knowledge cutoff
- Dec 1, 2025
- open weights
- no
- best for
- compute
Capabilities
What the model accepts and returns, where a probe through our own gateway proved it.
- streaming
- tools
- json mode
- vision
- audio
Providers
What you pay through us for each provider, and its own list price where that differs.
OpenAI
openai-main/gpt-5.5-pro- input /M
- $30.00
- output /M
- $180.00
cache read list price /M$3.00- Web search
- $0.01 per request
The provider's list price. We do not charge for searches yet.
1.0M context128K max out
Speed
- fastest over 24 hours
- 106.0 t/s
Fastest: OpenAI
- OpenAI5,716 ms to first token106.0 t/smedian of 24
Served
- served in the last 24 hours
- 100.00%
Across 1 provider, 24 of 24 requests
- OpenAI100.00% · 24 of 24
Rebuilt once a day from the requests we sent, so it is a daily figure and not a live one.
Not yet. These figures come from Artificial Analysis, which the publish pipeline reads once a day.
Integrations
What the model holds, rather than a compatibility grade: nothing here measures how well a particular tool gets on with it, so nothing here scores one.
- answers on
- responses
- accepts
- textimagepdf
- returns
- text
- reasoning
- tool_choice
- tools
- web_search
Use this model
Works with the OpenAI SDK. Point it at our base URL and use this id.
curl https://api.hopscotchlabs.ai/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai-main/gpt-5.5-pro",
"messages": [{"role": "user", "content": "Hello"}],
"max_tokens": 256
}'