GPT-5.5 Pro
High-compute variant of GPT-5.5 with extended thinking. 6x the price for mid-teens AAII uplift on hard reasoning workloads.
1M
tokens
33K
tokens
$30
per 1M tokens
$180
per 1M tokens
68
tokens/sec
Apr 2026
2026-04-23
$105.00
per 1M tokens
0.9
quality per $
Capabilities
Benchmarks
Price vs Quality
Context Window in Context
- ▸ GPT-5.5 Pro1M
- GPT-4.11M
- Gemini 2.5 Pro1M
- Gemini 2.0 Flash1M
- Llama 4 Maverick1M
- GPT-5.51M
- Claude Opus 4.71M
- Gemini 3.1 Pro1M
Not on our gateway yet
Swfte Connect does not hold a key for GPT-5.5 Pro, so there is nothing to run here. Add your own provider key and call it with the same API as every other model in this directory.
curl https://api.swfte.com/agents/v2/gateway/chat/completions \
-H "Authorization: Bearer $SWFTE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai:gpt-5.5-pro",
"messages": [{"role": "user", "content": "Hello"}]
}'About GPT-5.5 Pro
GPT-5.5 Pro is a reasoning AI model by OpenAI, released on April 23, 2026. It supports a context window of 1000K tokens and can generate up to 33K output tokens.
At $30 per million input tokens and $180 per million output tokens, its blended cost of $105.00/1M tokens places it in the premium pricing tier. Its value score of 0.9 reflects the balance of quality and cost.
Using GPT-5.5 Pro with Swfte
Access GPT-5.5 Pro through Swfte Connect, our unified LLM gateway. Connect gives you a single API for 50+ models, with automatic routing, cost optimization, and fallback handling. You can also try GPT-5.5 Pro in our AI Playground before integrating.