GPT-5.5 Pro pricing
Source: litellm · updated 2026-10-27
Short answer: GPT-5.5 Pro costs $30.00 per million input tokens and $180 per million output tokens. That is a 3:1 blended rate of $67.50 per million tokens, ranking it #702 of 704 tracked models by input price.
Price breakdown
| Metric | USD |
|---|---|
| Input, per 1M tokens | $30.00 |
| Output, per 1M tokens | $180 |
| Output รท input multiple | 6.00× |
| 3:1 blended, per 1M tokens | $67.50 |
| Context window | 1,050,000 tokens |
What a typical workload costs
| Monthly volume | Input cost | Output cost | Total | 1M in / 250K out | $30.00 | $45.00 | $75.00 |
|---|---|---|---|---|---|---|---|
| 10M in / 2.5M out | $300 | $450 | $750 | ||||
| 100M in / 25M out | $3,000 | $4,500 | $7,500 |
Other gpt models
| Model | Input | Output |
|---|---|---|
| GPT-5 Nano | $0.050 | $0.400 |
| GPT-4.1 Nano | $0.100 | $0.400 |
| GPT-4 O Mini Audio Preview | $0.150 | $0.600 |
| GPT-4 O Mini Search Preview | $0.150 | $0.600 |
| GPT-4 O Mini Search Preview | $0.150 | $0.600 |
Cheaper alternatives
Next cheaper option: GPT-5.2 Pro at $21.00 per 1M input tokens. Next step up: O1 Pro at $150 per 1M input tokens.