GPT-5.5
OpenAI's flagship released April 2026; tiered pricing kicks in above ~272K tokens. 90% cached-input discount.
GPT-5.5 strengths
- State-of-the-art reasoning and agentic workflows
- 1M+ context window
- Strong coding and tool use
- Multimodal (text + image input)
Pricing & context
| Context window | ~1.05M tokens (128K max output) |
| Input price /1M | $5.00 |
| Output price /1M | $30.00 |
| Modalities | text, image |
Cost guide: a typical call of ~10K input + 2K output tokens runs roughly $5.00 × 0.01 + $30.00 × 0.002 — worth modelling against cheaper tiers before committing high-volume traffic.
When to choose GPT-5.5
GPT-5.5 is best for Highest-stakes reasoning, complex agents, and frontier coding tasks where capability outweighs cost. If your workload is more cost-sensitive, weigh it against Llama 4 Scout (~$0.08 (varies by host) input /1M) first.
GPT-5.5 FAQ
How much does GPT-5.5 cost?
GPT-5.5 is priced at $5.00 per 1M input tokens and $30.00 per 1M output tokens (public API list price), with a ~1.05M tokens (128K max output) context window.
What is GPT-5.5 best for?
GPT-5.5 by OpenAI is best for Highest-stakes reasoning, complex agents, and frontier coding tasks where capability outweighs cost.
Is GPT-5.5 multimodal?
GPT-5.5 supports text, image.
Tools that use GPT-5.5
Other models
All models →| 01 | GPT-5.4 | OpenAI | $2.50 | → |
| 02 | GPT-5.4 mini | OpenAI | $0.75 | → |
| 03 | Claude Opus 4.8 | Anthropic | $5.00 | → |
| 04 | Claude Sonnet 4.6 | Anthropic | $3.00 | → |