Pricing · OpenAI
ChatGPT (chat-latest)
OpenAI's chat-latest, 400K tokens of context. Every number on this page was read off OpenAI's own pricing
page — never estimated, never recalled from memory.
How OpenAI describes it
“chat-latest points to the latest Instant model currently used in ChatGPT. We recommend leveraging GPT-6 Astra for production API usage.”
Pricing
| Input | $5.00 | per 1M tokens |
|---|---|---|
| Output | $30.00 | per 1M tokens |
| Cached input | $0.50 | per 1M tokens · 0.1× the input price |
At the calculator's starting volume, 1M input tokens and 200K output tokens with no cache hits, ChatGPT (chat-latest) costs $11.00: $5.00 for input and $6.00 for output, at the prices above. Same formula as the calculator; change the volume there.
Where this price sits
$5.00 per 1M input tokens is the 55th cheapest input price of the 67 current models with a verified price on this site, and the 8th of OpenAI's 11. Output costs 6.0× the input price.
Mentioned in
One post on this site cites ChatGPT (chat-latest). The sentence is the post's own, taken from where it links here.
-
Prompt Caching Is Not 10% Everywhere: What a Cache Hit Costs Across Eight Providers · September 16, 2026
OpenAI, all eight current models: GPT-6 Astra $1.00 on $10.00, GPT-5.6 Sol $0.40 on $4.00, Terra $0.20 on $2.00, Luna $0.02 on $0.20, GPT-5.3 Codex $0.175 on $1.75, ChatGPT (chat-latest) $0.50 on $5.00, GPT-5.6 Cyber $1.25 on $12.50 and the access-restricted GPT-Rosalind $0.50 on $5.00, verified September 14, 2026, and September 16 for Astra and Rosalind.
Specifications
| API model id | chat-latest | |
|---|---|---|
| Provider | OpenAI | |
| Family | GPT | |
| Context window | 400K tokens | |
| Max output | 128K tokens | |
| Status | Current | |
It returns up to 128K tokens per response, against a context window of 400K tokens.
Questions about ChatGPT (chat-latest) pricing
- How much does ChatGPT (chat-latest) cost per million tokens?
- $5.00 per 1M input tokens and $30.00 per 1M output tokens, read on OpenAI's official pricing page on September 28, 2026.
- What does a cached input token cost on ChatGPT (chat-latest)?
- $0.50 per 1M cached input tokens, 10% of the $5.00 input price.
Context window and max output read on OpenAI's model page (developers.openai.com/api/docs/models/chat-latest) on 2026-09-30: '400,000 context window', '128,000 max output tokens'.
Verified September 28, 2026 against OpenAI's official pricing page. Confidence: confirmed. No price change recorded for this model. How the data is checked.
Other OpenAI models with a verified price
- GPT-6 Luna GPT-6 $0.10 in · $0.50 out
- GPT-5.6 Luna GPT-5.6 $0.20 in · $1.20 out
- GPT-5.3 Codex Codex $1.75 in · $14.00 out
- GPT-6.1 Sol GPT-6 $2.00 in · $10.00 out
- GPT-6 Sol GPT-6 $2.00 in · $10.00 out
- GPT-5.6 Terra GPT-5.6 $2.00 in · $12.00 out
- GPT-5.6 Sol GPT-5.6 $4.00 in · $20.00 out · promo
- GPT-Rosalind GPT-Rosalind $5.00 in · $25.00 out
- GPT-6 Astra GPT-6 $10.00 in · $50.00 out
- GPT-5.6 Cyber GPT-5.6 $12.50 in · $75.00 out
Cheaper or equally priced alternatives
Current models with an input price at or below $5.00 per 1M tokens.
- GPT-Rosalind OpenAI $5.00 in · $25.00 out
- Claude Opus 5 Anthropic $5.00 in · $25.00 out
- Claude Opus 4.8 Anthropic $5.00 in · $25.00 out
- Claude Opus 4.7 Anthropic $5.00 in · $25.00 out
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