Best Input Price
$27.27 / 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
2026-04-08
Inference Providers (18)
| Provider | Model ID | Context | Input / 1M | Output / 1M | Action |
|---|---|---|---|---|---|
| Poe | openai/gpt-5.5-pro | 400,000 | $27.27 | $163.64 | Docs ↗ |
| LLM Gateway | openai/gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| Kilo Gateway | openai/gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| OpenRouter | openai/gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| ZenMux | openai/gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| Impossibl | openai/gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| Cloudflare AI Gateway | openai/gpt-5.5-pro | 1,000,000 | $30.00 | $180.00 | Docs ↗ |
| Vercel AI Gateway | openai/gpt-5.5-pro | 1,000,000 | $30.00 | $180.00 | Docs ↗ |
| FastRouter | openai/gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| OrcaRouter | openai/gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| Neon | gpt-5-5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| AIHubMix | gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| Opper | gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| Eden AI | openai/gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| Requesty | gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| DevPass (LLM Gateway) | gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| CrossModel | openai/gpt-5.5-pro | 1,050,000 | $30.00 | $180.00 | Docs ↗ |
| Venice AI | openai-gpt-55-pro | 1,000,000 | $37.50 | $225.00 | Docs ↗ |