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OpenAI API Pricing
OpenAI sells the GPT-6 and GPT-5.6 families through its API, and ChatGPT plans for everyday use. One typical prompt costs 0.025¢ to 3¢ depending on the model. Verified October 2026.
Is ChatGPT free?
ChatGPT has a free plan with unlimited text chats on GPT-5.6 Luna, subject to abuse guardrails.
OpenAI API Prices by Model
| Model | Input / 1M | Output / 1M | Per prompt |
|---|---|---|---|
| GPT-6 Luna | $0.10 | $0.50 | $0.000300 |
| GPT-5.6 Luna | $0.20 | $1.20 | $0.000700 |
| GPT-6.1 Sol | $2.00 | $10.00 | $0.0060 |
| GPT-6 Sol | $2.00 | $10.00 | $0.0060 |
| GPT-5.6 Terra | $2.00 | $12.00 | $0.0070 |
| GPT-5.6 Sol | $4.00 | $20.00 | $0.0120 |
| GPT-6 Astra | $10.00 | $50.00 | $0.0300 |
| GPT-4o MiniOlder | $0.15 | $0.60 | $0.000375 |
| GPT-4.1 MiniOlder | $0.40 | $1.60 | $0.0010 |
| GPT-4.1Older | $2.00 | $8.00 | $0.0050 |
| GPT-4oOlder | $2.50 | $10.00 | $0.0063 |
| GPT-4.1 NanoShutting down | $0.10 | $0.40 | $0.000250 |
| o4-miniShutting down | $1.10 | $4.40 | $0.0027 |
| o3Shutting down | $2.00 | $8.00 | $0.0050 |
| GPT-5Shutting down | $1.25 | $10.00 | $0.0056 |
Batch: The Batch API is 50% off input and output, with results within 24 hours. Flex processing is priced the same as Batch.
Caching: Cached input is billed at a fraction of the input price (0.1x on GPT-5.6 and GPT-6). On GPT-5.6 and later, cache writes cost 1.25x input.
Free API tier: None — the API is paid from the first token.
Source: OpenAI official pricing · verified October 2026.
ChatGPT Plans
Unlimited text chats with GPT-5.6 Luna; limited uploads, images, voice and deep research.
More messages, uploads, image creation and memory; Think uses GPT-5.6 Luna. May include ads.
GPT-6 reasoning models, expanded deep research and Codex, projects and custom GPTs.
5x Plus usage, Pro reasoning powered by GPT-6 Astra.
20x Plus usage. New sign-ups paused since September 10, 2026.
Indian prices include 18% GST. US prices exclude tax.
Subscription or API: which is cheaper?
| Plan | Price / month | API prompts / day |
|---|---|---|
| ChatGPT Go | $8₹399 | ~381GPT-5.6 Luna |
| ChatGPT Plus | $20₹1,999 | ~22GPT-6 Astra |
| ChatGPT Pro 5x | $100₹10,699 | ~111GPT-6 Astra |
| ChatGPT Pro 20x | $200₹19,900 | ~222GPT-6 Astra |
Typical prompt = 500 input + 500 output tokens, priced on the API model the plan says it includes (or the provider’s top model when it does not say). If you would send more prompts than this every day, the subscription is the better deal — within its usage limits. Fewer, and paying per API call is cheaper. Subscriptions also include apps, tools and features the raw API does not.
Plan details: ChatGPT official page.
Compare OpenAI With Every Other Model
How many tokens you expect the model to generate per response
Showing a typical prompt (500 input + 500 output tokens) across 34 models. Paste your own prompt above for an exact count.
| Model | Per Prompt | Prompts / $1 | Monthly |
|---|---|---|---|
| OpenAI | $0.0002500.025¢ | 4,000 | $0.7500 |
| OpenAI | $0.0003000.03¢ | 3,333 | $0.9000 |
GPT-4o MiniOlder OpenAI | $0.0003750.037¢ | 2,666 | $1.13 |
| OpenAI | $0.0007000.07¢ | 1,428 | $2.10 |
GPT-4.1 MiniOlder OpenAI | $0.00100.1¢ | 1,000 | $3.00 |
o4-miniShutting down OpenAI | $0.00270.27¢ | 363 | $8.25 |
GPT-4.1Older OpenAI | $0.00500.5¢ | 200 | $15.00 |
o3Shutting down OpenAI | $0.00500.5¢ | 200 | $15.00 |
GPT-5Shutting down OpenAI | $0.00560.56¢ | 177 | $16.88 |
| OpenAI | $0.00600.6¢ | 166 | $18.00 |
| OpenAI | $0.00600.6¢ | 166 | $18.00 |
GPT-4oOlder OpenAI | $0.00630.63¢ | 160 | $18.75 |
| OpenAI | $0.00700.7¢ | 142 | $21.00 |
| OpenAI | $0.0120 | 83 | $36.00 |
| OpenAI | $0.0300 | 33 | $90.00 |
| Mistral | $0.0003750.037¢ | 2,666 | $1.13 |
| OpenAI (via Together) | $0.0003750.037¢ | 2,666 | $1.13 |
| DeepSeek | $0.0007500.075¢ | 1,333 | $2.25 |
| Meta (via Together) | $0.0009250.092¢ | 1,081 | $2.77 |
| Mistral | $0.00100.1¢ | 1,000 | $3.00 |
| $0.00140.14¢ | 714 | $4.20 | |
| xAI | $0.00190.19¢ | 533 | $5.63 |
| $0.00220.22¢ | 444 | $6.75 | |
| DeepSeek | $0.00260.26¢ | 378 | $7.92 |
| Meta | $0.00270.27¢ | 363 | $8.25 |
| Anthropic | $0.00300.3¢ | 333 | $9.00 |
| xAI | $0.00400.4¢ | 250 | $12.00 |
| Alibaba (Qwen) | $0.00400.4¢ | 250 | $12.00 |
| Mistral | $0.00450.45¢ | 222 | $13.50 |
| Anthropic | $0.00600.6¢ | 166 | $18.00 |
| $0.00700.7¢ | 142 | $21.00 | |
| Moonshot AI | $0.00900.9¢ | 111 | $27.00 |
| Anthropic | $0.0120 | 83 | $36.00 |
| Anthropic | $0.0300 | 33 | $90.00 |
Prices from official provider pricing pages, verified October 2026.
OpenAI API & ChatGPT Pricing — FAQ
The OpenAI API is pay-per-token. One typical prompt (500 input + 500 output tokens) costs between $0.000250 and $0.0300 depending on the model, across 15 models available today. Prices were verified against OpenAI's official pricing page in October 2026.
ChatGPT has a free plan with unlimited text chats on GPT-5.6 Luna, subject to abuse guardrails.
ChatGPT plans: Go $8/month (₹399 in India); Plus $20/month (₹1,999 in India); Pro 5x $100/month (₹10,699 in India); Pro 20x $200/month (₹19,900 in India). Indian prices include 18% GST. US prices exclude tax.
GPT-4.1 Nano is the cheapest OpenAI model available: $0.10 per million input tokens and $0.40 per million output tokens, about 0.025¢ per typical prompt — $1 buys about 4,000 prompts.
The Batch API is 50% off input and output, with results within 24 hours. Flex processing is priced the same as Batch.
ChatGPT Plus costs $20 a month — the price of about 667 typical prompts on GPT-6 Astra through the API, or roughly 22 a day. If you send more than that, the subscription is cheaper (within its usage limits); if you send fewer, paying per API call costs less.