DeepSeek API vs OpenAI API pricing
Monthly cost at three volumes
| Volume | DeepSeek API | OpenAI API |
|---|---|---|
| small1M input, 200K output | $0.27 / modeepseek-flash (off-peak) | $0.20 / mogpt-6-luna |
| growing50M input, 10M output | $13.50 / modeepseek-flash (off-peak) | $10 / mogpt-6-luna |
| scale1B input, 200M output | $270 / modeepseek-flash (off-peak) | $200 / mogpt-6-luna |
| your volumeset above | $13.50 / modeepseek-flash (off-peak) | $10 / mogpt-6-luna |
Each cell is the cheapest feasible plan, or the chosen model, at that volume, from the shared Overage cost function. "Cheapest model" only considers models with both an input and an output price listed. Volumes are example scenarios you can edit.
Cheapest model per service, USD per 1M tokens
| Service | Cheapest model | Input | Output | Models listed |
|---|---|---|---|---|
| DeepSeek API | deepseek-flash (off-peak) | $0.15 | $0.60 | 4 |
| OpenAI API | gpt-6-luna | $0.10 | $0.50 | 11 |
Every model
| Model | Service | Input | Output |
|---|---|---|---|
| deepseek-flash (off-peak) | DeepSeek API | $0.15 | $0.60 |
| deepseek-flash (peak) | DeepSeek API | $0.30 | $1.20 |
| deepseek-v4-pro (off-peak) | DeepSeek API | $0.66 | $1.98 |
| deepseek-v4-pro (peak) | DeepSeek API | $1.32 | $3.96 |
| gpt-6-luna | OpenAI API | $0.10 | $0.50 |
| gpt-4o-mini-transcribe | OpenAI API | $1.25 | $5 |
| gpt-5.3-codex | OpenAI API | $1.75 | $14 |
| gpt-6.1-sol | OpenAI API | $2 | $10 |
| gpt-4o-transcribe | OpenAI API | $2.50 | $10 |
| gpt-5.6-sol | OpenAI API | $4 | $20 |
| gpt-rosalind-research | OpenAI API | $5 | $25 |
| gpt-rosalind-discovery | OpenAI API | $5 | $25 |
| chat-latest | OpenAI API | $5 | $30 |
| gpt-6-astra | OpenAI API | $10 | $50 |
| gpt-5.6-cyber | OpenAI API | $12.50 | $75 |
Models are compared by name and price, never by position. Pick one model per service, or "Cheapest model", in the cost table above.
Tightest rate limit
| Measure | DeepSeek API | OpenAI API |
|---|---|---|
| Tightest limit | unlisted | unlisted |
Changes in the last 90 days
No changes recorded.
No change detected for either service in the last 90 days.