Pricing · per 1M tokens
Input
$30.00
per million tokens
Output
$180.00
per million tokens
| Cached input | $3.00/Mtok (10% of input — prompt caching) |
|---|---|
| Blended avg cost* | $105.00/Mtok |
Overview
Highest-capability GPT-5.5 tier for the hardest professional and research workloads. 1.05M context, multimodal input.
Capabilities
Input 2/5
Text ✓
Image ✓
Audio
Video
PDF
Output 1/5
Text ✓
Image
Audio
Video
Embedding
Features 4/9
Prompt caching ✓
Reasoning ✓
Coding
Fast inference
Long context ✓
Open weights
Multimodal ✓
Web search
Realtime
Specifications
| Provider | OpenAI |
|---|---|
| Context window | 1M tokens |
| Modality | text, image |
| Parameters | Proprietary |
| Open source | No — proprietary |
| Released | Apr 23, 2026 |
| Status | Current |
| Last updated | Jul 3, 2026 |
| Tags | reasoning multimodal flagship |
Cost calculator
At a glance
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Price history
Last checked: Jul 3, 2026 · verified against the official provider page twice daily
No price changes detected — this model's pricing has been stable since we began tracking it.