Model Details
Released
Apr 23, 2026
Context Length
400,000
Max Output
128,000
Where is chat-latest a perfect fit?
chat-latest is OpenAI’s API alias for the latest Instant model used in ChatGPT. Unlike a fixed snapshot, its underlying model is regularly updated, so OpenAI recommends GPT-5.6 instead when production applications require greater model stability.
- Testing the current ChatGPT Instant experience through the API
- Conversational assistants prioritising fast, natural interactions
- Applications that benefit automatically as the underlying ChatGPT model changes
- General text generation, summarisation, extraction, and classification
- Image-understanding applications requiring text responses
- Function-calling and structured-output workflows
- Applications using web search, file search, code interpreter, image generation, or MCP
- Experimentation where staying aligned with ChatGPT matters more than pinning model behaviour
- Testing the current ChatGPT Instant experience through the API
- Conversational assistants prioritising fast, natural interactions
- Applications that benefit automatically as the underlying ChatGPT model changes
- General text generation, summarisation, extraction, and classification
- Image-understanding applications requiring text responses
- Function-calling and structured-output workflows
- Applications using web search, file search, code interpreter, image generation, or MCP
- Experimentation where staying aligned with ChatGPT matters more than pinning model behaviour
Quick Model Estimate
Your GPT-5 Cost Estimate
💰 Total Cost
USD 3.00
for 1000 input + 1000 output tokens
📥 Input (1000 × $5.000000)
USD 1.5000
📤 Output (1000 × $30.000000)
USD 1.5000
Cost Breakdown
📥 Input 50%
📤 Output 50%
Prices updated daily from official provider data.
Pricing
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 OpenAI | Text | Standard | $5.0000 | $30.0000 | 400,000 tokens | → |
FAQs about chat-latest
How much does chat-latest cost per 1M tokens?
chat-latest costs $5.00 per million input tokens, and $30.00 per million output tokens.
What does a typical workload cost with chat-latest?
1,000 requests of 2,000 input and 500 output tokens each — 2,000,000 input and 500,000 output tokens in total — costs $25.00 with chat-latest at its lowest rates. Use the calculator on this page for your own volumes.
Where can I use chat-latest?
chat-latest is available through OpenAI, from $5.00 per million input tokens.
What is chat-latest's context window?
chat-latest has a context window of 400,000 tokens, and returns up to 128,000 tokens in a single response.