GPT-5.5
language modelOpenAI
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
Key facts
| Made by | OpenAI |
|---|---|
| Type | language model |
| Released | April 24, 2026 |
| Reads at once | 1,050,000 tokens |
| Price (API, per million tokens) | $5 in · $30 out |
| Input → output | file, image, text → text |
Questions about GPT-5.5
Who makes GPT-5.5?
GPT-5.5 is made by OpenAI.
When was GPT-5.5 released?
We first saw GPT-5.5 listed on April 24, 2026.
How much does GPT-5.5 cost?
Through OpenRouter it costs $5 per million input tokens and $30 per million output tokens. Prices change, so check the provider before you build on it.
How much text can GPT-5.5 read at once?
Up to 1,050,000 tokens, roughly 787.5K words.
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