GPT-5.5 Pro
OpenAIUpdated April 2026. GPT-5.5 Pro by OpenAI: $30.00/M cache-miss input, $180.00/M output tokens. 1.1M context, 128K max output. Vision & Function Calling. Free calculator + compare 40+ models.
Input Price
$30.00
cache miss / 1M tokens
Output Price
$180.00
per 1M tokens
Context Window
1.1M
tokens
Specifications
| Provider | OpenAI |
| Model ID | gpt-5.5-pro |
| Input Price | $30 / 1M cache-miss tokens |
| Output Price | $180 / 1M tokens |
| Context Window | 1.1M tokens |
| Max Output | 128K tokens |
| Capabilities | textvisionfunction_callingstructured_output |
| Release Date | 2026-04 |
| Notes | Higher-compute GPT-5.5 variant for the hardest professional tasks. No cached-input discount is listed on the official model page. |
Monthly Cost Estimates
Estimated monthly costs based on different daily usage levels (assuming 50% input / 50% output split). Input estimates use cache-miss pricing, so cache-heavy workloads can be lower.
| Daily Tokens | Monthly Cost | Annual Cost |
|---|---|---|
| 10K | $31.50 | $378.00 |
| 50K | $157.50 | $1890.00 |
| 100K | $315.00 | $3780.00 |
| 500K | $1575.00 | $18900.00 |
| 1.0M | $3150.00 | $37800.00 |
About GPT-5.5 Pro
GPT-5.5 Pro is a large language model by OpenAI. It features a 1.1M token context window with up to 128K tokens of output per request. The model supports 4 capabilities: text, vision, function_calling, structured_output.
At $30 per million cache-miss input tokens and $180 per million output tokens, GPT-5.5 Pro is positioned as a premium option in the OpenAI lineup. Use our Token Counter to estimate how many tokens your prompts use, and our Pricing Calculator to compare costs across all models.
GPT-5.5 Pro Key Details
- Pricing: $30/M cache-miss input tokens, $180/M output tokens
- Context window: 1.1M tokens — one of the largest available
- Max output: 128K tokens per response
- Capabilities: text, vision, function_calling, structured_output
- Highlights: Higher-compute GPT-5.5 variant for the hardest professional tasks. No cached-input discount is listed on the official model page.
- Released: 2026-04
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FAQ
How much does GPT-5.5 Pro cost?
GPT-5.5 Pro costs $30 per million cache-miss input tokens and $180 per million output tokens. For a typical workload of 100K input tokens/day and 50K output tokens/day, expect approximately $360.00/month before cache-hit savings.
What is GPT-5.5 Pro's context window?
GPT-5.5 Pro supports a context window of 1.1M tokens. This means your combined input prompt and output response can be up to 1.1M tokens. The maximum output per response is 128K tokens.
Is GPT-5.5 Pro good for my use case?
GPT-5.5 Pro supports text, vision, function_calling, structured_output. As a premium model, it excels at complex reasoning, coding, and tasks requiring maximum quality. Use our Pricing Calculator to compare with alternatives.