Providers / OpenAI / GPT-5 Mini
GPT-5 Mini API Cost Calculator
GPT-5 Mini costs $0.25 per 1M input tokens and $2 per 1M output tokens at official OpenAI API prices, verified 2026-10-26. Estimate your own usage below — the calculator is preset to this model.
Calculate your GPT-5 Mini cost →Paste text to count tokens instead
Cost per call
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Estimated monthly cost
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Official price vs gateway price
| Where | Input / 1M | Output / 1M |
|---|---|---|
| Official API | $0.25 | $2 |
GPT-5 Mini is priced above at the official list rate. We have not found a gateway that sells it cheaper with a verifiable public price, so no gateway row is shown — we never estimate one.
Using open-weight models instead (DeepSeek, Qwen, Llama, gpt-oss)? See our Novita AI gateway prices, or go toNovita AI (affiliate).Disclosure.
OpenAI lists GPT-5 Mini as Deprecated; for new low-latency volume workloads they recommend GPT-5.6 Terra.
GPT-5 Mini price facts
| Input | $0.25 per 1M tokens |
|---|---|
| Output | $2 per 1M tokens |
| Cached input | $0.025 per 1M tokens |
| Batch tier | $0.125 in / $1 out per 1M tokens |
| Context window | 400,000 tokens |
| Released | 2025-08-07 |
| Price verified | 2026-10-26 · source |
What GPT-5 Mini costs in practice
| Workload | Per call | Per month |
|---|---|---|
| Chat assistant 2,000 input / 500 output tokens per call, 10,000 calls a month | $0.0015 | $15.00 |
| Document processing 50,000 input / 2,000 output tokens per call, 1,000 calls a month | $0.0165 | $16.50 |
| Agent loop with prompt caching 10,000 fresh input / 100,000 cached input / 2,000 output tokens per call, 500 calls a month | $0.009 | $4.50 |
Frequently asked questions
How much does GPT-5 Mini cost per month?
It depends entirely on token volume. As worked examples: a chat assistant doing 10,000 calls a month costs $15.00, while a document pipeline doing 1,000 long calls costs $16.50. Use the calculator on this page with your own numbers for an exact figure. Prices are official rates verified 2026-10-26.
Is GPT-5 Mini cheaper than GPT-6 Luna?
At a blended workload of 1M input and 250K output tokens, GPT-5 Mini costs $0.75 and GPT-6 Luna costs $0.225 — so GPT-6 Luna is cheaper at this mix. The answer can flip if your workload is mostly output or mostly cached input.
Does GPT-5 Mini have batch or caching discounts?
Yes — batch processing is $0.125 / $1 per 1M tokens. Cached input is billed at $0.025 per 1M tokens. Prices verified 2026-10-26. We do not invent unpublished rates.
Are these official prices or gateway prices?
GPT-5 Mini on this page uses official OpenAI API prices from the provider's public pricing page. Gateway reseller rates, when shown elsewhere on the site, are labeled separately.
Related
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Related models
Closest in cost for 1M input + 250K output tokens (standard tier), listed by price.
- DeepSeek V4.1 Flash — $0.3 / $1.2 per 1M tokens ($0.6 for that workload)
- Gemini 3.1 Flash-Lite — $0.25 / $1.5 per 1M tokens ($0.625 for that workload)
- Perplexity Sonar — $0.25 / $2.5 per 1M tokens ($0.875 for that workload)
- Gemini 3.5 Flash-Lite — $0.3 / $2.5 per 1M tokens ($0.925 for that workload)