GPT-4 O pricing
Source: litellm · updated 2026-10-28
Short answer: GPT-4 O costs $2.50 per million input tokens and $10.00 per million output tokens. That is a 3:1 blended rate of $4.38 per million tokens, ranking it #624 of 713 tracked models by input price.
Price breakdown
| Metric | USD |
|---|---|
| Input, per 1M tokens | $2.50 |
| Output, per 1M tokens | $10.00 |
| Output รท input multiple | 4.00× |
| 3:1 blended, per 1M tokens | $4.38 |
| Context window | 131,072 tokens |
What a typical workload costs
| Monthly volume | Input cost | Output cost | Total | 1M in / 250K out | $2.50 | $2.50 | $5.00 |
|---|---|---|---|---|---|---|---|
| 10M in / 2.5M out | $25.00 | $25.00 | $50.00 | ||||
| 100M in / 25M out | $250 | $250 | $500 |
Other gmi models
| Model | Input | Output |
|---|---|---|
| GPT-4 O Mini | $0.150 | $0.600 |
| GLM 4.7 Fp 8 | $0.400 | $2.00 |
| GPT-5.1 | $1.25 | $10.00 |
| GPT-5 | $1.25 | $10.00 |
| GPT-5.2 | $1.75 | $14.00 |
Cheaper alternatives
Next cheaper option: GLM 5.3 Prime at $2.80 per 1M input tokens. Next step up: Au Anthropic Claude Sonnet 5 at $2.20 per 1M input tokens.