GPT Chat Latest

GPT Chat Latest is OpenAI's rolling alias that points to the latest Instant model currently used in ChatGPT, with text and image input and tool support.

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input · usd / 1m tok

$5.00

output · usd / 1m tok

$30.00

context window

400ktokens

modalities · in → out

pricing

base api ratesusd per 1m tokens

input: $5.00
output: $30.00
cache read: $0.50

providers

Different companies host GPT Chat Latest. Impossibl routes your request intelligently and handles failover automatically when a provider is down.

Azure OpenAI
OpenAI

specifications

takes text and image in, gives text outopenai/chat-latest

creatorOpenAI
model typeText generation
context window400,000 tokens
maximum outputnot published
input
takes text and image in, gives text out
outputtext
tool callingnot verified
releasedmay 5, 2026
endpoint/v1/chat/completions

unknown means the public catalog does not establish that fact. a model's documented capabilities can differ from what a particular api supports. see the model documentation for integration details.

try it · your prompt, this model, live

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="openai/chat-latest",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="openai/chat-latest",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

benchmarks

benchmark results are not available for this model yet.

compare GPT Chat Latest with other models

frontier labs and open weights, best-ranked firstusd / 1m tok · in / out

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frequently asked questions

What is GPT Chat Latest?

GPT Chat Latest is OpenAI's rolling alias that points to the latest Instant model currently used in ChatGPT, with text and image input and tool support. Unlike a pinned snapshot, the underlying model is updated regularly, so OpenAI recommends GPT-6 Astra for production work that needs stability.

How much does GPT Chat Latest cost?

GPT Chat Latest costs $5.00 per million input tokens and $30.00 per million output tokens through the Impossibl API. Cache reads cost $0.50 per million tokens. All rates are in USD.

view the pricing table ↑

What is the context length of GPT Chat Latest?

GPT Chat Latest has a 400,000-token context window through the Impossibl API.

What inputs and outputs does GPT Chat Latest support?

GPT Chat Latest accepts text and image as input. GPT Chat Latest returns text.

How do I use GPT Chat Latest through an API?

GPT Chat Latest is available through the Impossibl API. Use openai/chat-latest as the model identifier with /v1/chat/completions. The quickstart explains how to create an API key and send your first request.

follow the api quickstart →

When was GPT Chat Latest released?

OpenAI released GPT Chat Latest on May 5, 2026.

Creator release announcement ↗

this page describes GPT Chat Latest as listed by the impossibl public api. prices and availability come from that catalog, refreshed here every five minutes. this is an impossibl offering, not a comparison of independent hosting-provider quotes. model descriptions and release dates, where available, use the creator sources linked under the answers above.

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