OpenAI: GPT-5.5 Pro
OpenAIModerated
openai/gpt-5.5-proAbout this model
GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...
Make a request
OpenAI-compatible: set the base URL and your Promptix API key, keep your existing SDK.
curl https://promptix.tn/api/v1/chat/completions \ -H "Authorization: Bearer $PROMPTIX_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "model": "openai/gpt-5.5-pro", "messages": [ {"role": "user", "content": "Hello! What can you do?"} ] }'Pricing
In TND per 1M tokens. VAT and the platform fee are added at top-up.
Input tokens
116.129 TNDper 1M tokens
Output tokens
696.774 TNDper 1M tokens
1,000 requests with 1K input and 500 output tokens cost about 464.516 TND.
Specifications
- Provider
- OpenAI
- Context window
- 1,050,000 tokens
- Input modality
- Text
- Added
- Apr 24, 2026
- Supported parameters
include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choice