Best Input Price
$30.00 / 1M
Highest-accuracy GPT-5.5 tier for slower, precision-heavy reasoning and coding
Context Window
1,050,000 tokens
Reasoning
Supported
Tool Calling
Supported
Released
2026-04-24
Inference Providers (2)
| Provider | Model ID | Context | Input / 1M | Output / 1M | Action |
|---|---|---|---|---|---|
| OpenCode Zen | gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| OpenAI | gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |