AI API cost calculator
How much would your AI feature cost to run? Describe the workload and compare 17 models at official list prices.
- OpenAI
- Anthropic
- DeepSeek
- GPT-6 AstraOpenAI
- GPT-6 SolOpenAI
- GPT-6 LunaOpenAI
- GPT-5.6 SolOpenAI
- GPT-5.6 TerraOpenAI
- GPT-5.6 LunaOpenAI
- Claude Fable 5.1Anthropic
- Claude Opus 5.5Anthropic
- Claude Opus 5Anthropic
- Claude Sonnet 5Anthropic
- Claude Haiku 4.5Anthropic
- Gemini 3.1 ProGoogle
- Gemini 3.8 FlashGoogle
- Gemini 3.5 FlashGoogle
- Gemini 3.5 Flash-LiteGoogle
- DeepSeek V4 ProDeepSeek
- DeepSeek FlashDeepSeek
Price list
US dollars per million tokens, standard rates. Checked September 28, 2026. Standard list prices in US dollars per million tokens, from each provider's own pricing page. Batch APIs and prompt caching can cut costs substantially; not included here.
| Model | Provider | Input | Output | Notes |
|---|---|---|---|---|
| GPT-6 Luna | OpenAI | $0.10 | $0.50 | |
| GPT-5.6 Luna | OpenAI | $0.20 | $1.20 | |
| DeepSeek Flash | DeepSeek | $0.30 | $1.20 | Peak-hour price; half price off-peak. |
| Gemini 3.5 Flash-Lite | $0.30 | $2.50 | ||
| Gemini 3.8 Flash | $0.75 | $3.75 | Introductory price until 31 Dec 2026; doubles on 1 Jan 2027. | |
| DeepSeek V4 Pro | DeepSeek | $1.32 | $3.96 | Peak-hour price; half price off-peak. |
| Claude Haiku 4.5 | Anthropic | $1.00 | $5.00 | |
| Gemini 3.5 Flash | $1.50 | $9.00 | ||
| GPT-6 Sol | OpenAI | $2.00 | $10.00 | |
| Claude Sonnet 5 | Anthropic | $2.00 | $10.00 | |
| GPT-5.6 Terra | OpenAI | $2.00 | $12.00 | |
| Gemini 3.1 Pro | $2.00 | $12.00 | Prompts up to 200K tokens; longer prompts cost more. | |
| GPT-5.6 Sol | OpenAI | $4.00 | $20.00 | |
| Claude Opus 5.5 | Anthropic | $4.00 | $20.00 | |
| Claude Opus 5 | Anthropic | $5.00 | $25.00 | |
| GPT-6 Astra | OpenAI | $10.00 | $50.00 | |
| Claude Fable 5.1 | Anthropic | $10.00 | $50.00 |