Providers / OpenAI / chat-latest (ChatGPT Instant)
chat-latest (ChatGPT Instant) API Cost Calculator
chat-latest (ChatGPT Instant) costs $5 per 1M input tokens and $30 per 1M output tokens at official OpenAI API prices, verified 2026-10-28. Estimate your own usage below — the calculator is preset to this model.
Calculate your chat-latest (ChatGPT Instant) 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 | $5 | $30 |
chat-latest (ChatGPT Instant) 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.
chat-latest is a moving alias for the Instant model currently used in ChatGPT; the underlying snapshot changes over time. OpenAI recommends GPT-6 Astra for production API use.
No Batch API support for this model.
chat-latest (ChatGPT Instant) price facts
| Input | $5 per 1M tokens |
|---|---|
| Output | $30 per 1M tokens |
| Cached input | $0.5 per 1M tokens |
| Batch tier | Not published |
| Context window | 400,000 tokens |
| Released | — |
| Price verified | 2026-10-28 · source |
What chat-latest (ChatGPT Instant) costs in practice
| Workload | Per call | Per month |
|---|---|---|
| Chat assistant 2,000 input / 500 output tokens per call, 10,000 calls a month | $0.025 | $250.00 |
| Document processing 50,000 input / 2,000 output tokens per call, 1,000 calls a month | $0.31 | $310.00 |
| Agent loop with prompt caching 10,000 fresh input / 100,000 cached input / 2,000 output tokens per call, 500 calls a month | $0.16 | $80.00 |
Frequently asked questions
How much does chat-latest (ChatGPT Instant) cost per month?
It depends entirely on token volume. As worked examples: a chat assistant doing 10,000 calls a month costs $250.00, while a document pipeline doing 1,000 long calls costs $310.00. Use the calculator on this page with your own numbers for an exact figure. Prices are official rates verified 2026-10-28.
Is chat-latest (ChatGPT Instant) cheaper than GPT-6 Luna?
At a blended workload of 1M input and 250K output tokens, chat-latest (ChatGPT Instant) costs $12.50 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 chat-latest (ChatGPT Instant) have batch or caching discounts?
No published batch rate in our sources. Cached input is billed at $0.5 per 1M tokens. Prices verified 2026-10-28. We do not invent unpublished rates.
Are these official prices or gateway prices?
chat-latest (ChatGPT Instant) 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.
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