Question 1

What is the cost of GPT-5.3-Instant by Poe?

Accepted Answer

GPT-5.3-Instant by Poe costs $1.60 per 1M input tokens and $13.00 per 1M output tokens. Cached reads cost $0.16 per 1M tokens.

Question 2

What is the context window of GPT-5.3-Instant by Poe?

Accepted Answer

GPT-5.3-Instant by Poe has a context window of 128K tokens. It supports up to 112K input tokens and can generate up to 16K output tokens.

Question 3

What are the capabilities of GPT-5.3-Instant by Poe?

Accepted Answer

GPT-5.3-Instant by Poe supports tool calling/function calling, file attachments. It has closed weights.

Question 4

What input and output types does GPT-5.3-Instant support?

Accepted Answer

GPT-5.3-Instant by Poe accepts text, image as input and can generate text as output.

Question 5

Is GPT-5.3-Instant by Poe open source?

Accepted Answer

No, GPT-5.3-Instant by Poe has closed weights. The model is only available through the Poe API.

Question 6

Does GPT-5.3-Instant support function calling?

Accepted Answer

Yes, GPT-5.3-Instant by Poe supports tool calling (also known as function calling), allowing it to interact with external tools and APIs during conversations.

GPT-5.3-Instant API

Input Modalities

Output Modalities

Standard (per 1M tokens)

Caching (per 1M tokens)