GPT-4 Turbo

GPT-4 Turbo is OpenAI's GPT-4 generation model with vision, an older flagship for chat, analysis, and coding over long inputs.

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input · usd / 1m tok

$10.00

output · usd / 1m tok

$30.00

context window

128ktokens

modalities · in → out

pricing

base api ratesusd per 1m tokens

input: $10.00
output: $30.00

providers

OpenAI hosts GPT-4 Turbo. Impossibl routes your request intelligently and handles failover automatically when a provider is down.

OpenAI

specifications

takes text and image in, gives text outopenai/gpt-4-turbo

creatorOpenAI
model typeText generation
context window128,000 tokens
maximum outputnot published
input
takes text and image in, gives text out
outputtext
tool callingnot verified
releasedapr 9, 2024
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/gpt-4-turbo",
    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/gpt-4-turbo",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

benchmarks

intelligence index

7.0#104 of 108 models on the gateway

coding index21.5#56 of 64
humanity’s last exam3.1%#86 of 87

LiveCodeBench29.1%
Humanity’s Last Exam3.1%

Intelligence Index7.04
coding index (API)21.5
intelligence index (API)7

view source ↗all source data and breakdowns (json) ↗

each configuration is listed separately; these evaluations describe the tested model configuration, and performance and costs can differ on impossibl. unmeasured scores are omitted and api values keep their source units. last checked 2026-10-14.

compare GPT-4 Turbo 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-4 Turbo?

GPT-4 Turbo is OpenAI's GPT-4 generation model with vision, an older flagship for chat, analysis, and coding over long inputs. Its vision requests support JSON mode and function calling, and it was later succeeded by the faster GPT-4o.

How much does GPT-4 Turbo cost?

GPT-4 Turbo costs $10.00 per million input tokens and $30.00 per million output tokens through the Impossibl API. All rates are in USD.

view the pricing table ↑

What is the context length of GPT-4 Turbo?

GPT-4 Turbo has a 128,000-token context window through the Impossibl API.

What inputs and outputs does GPT-4 Turbo support?

GPT-4 Turbo accepts text and image as input. GPT-4 Turbo returns text.

How do I use GPT-4 Turbo through an API?

GPT-4 Turbo is available through the Impossibl API. Use openai/gpt-4-turbo 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-4 Turbo released?

OpenAI released GPT-4 Turbo on April 9, 2024.

Creator release announcement ↗

this page describes GPT-4 Turbo 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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