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GPT-3.5 Turbo

OpenAI's most capable and cost effective model in the GPT-3.5 family optimized for chat purposes, but also works well for traditional completions tasks.

text → text · made by OpenAI

$0.5$1.5per Mtok in / out
OpenAI · 6 sellers

Sold by 9 ways

SellerLaneRate
OpenAI apibatch$0.25per Mtok in$0.75per Mtok outdevelopers.openai.com · read 2026-08-24
Microsoft Azure AI cloudstandard$0.5per Mtok in$1.5per Mtok outmodels.dev · read 2026-09-16
OpenAI apistandard$0.5per Mtok in$1.5per Mtok outdevelopers.openai.com · read 2026-08-24
Nous Research 2 ways$0.5per Mtok in$1.5per Mtok out
Nous Research aggregatorbatch$0.25per Mtok in$0.75per Mtok outinference-api.nousresearch.com · read 2026-09-12
Nous Research aggregatorstandard$0.5per Mtok in$1.5per Mtok outinference-api.nousresearch.com · read 2026-09-12
OpenRouter 2 ways$0.5per Mtok in$1.5per Mtok out
OpenRouter aggregatorbatch$0.25per Mtok in$0.75per Mtok outopenrouter.ai · read 2026-08-24
OpenRouter aggregatorstandard$0.5per Mtok in$1.5per Mtok outopenrouter.ai · read 2026-08-24
ElectronHub aggregatorstandard$0.5per Mtok in$1.5per Mtok outapi.electronhub.ai · read 2026-09-16
Vercel AI Gateway aggregatorstandard$0.5per Mtok in$1.5per Mtok outai-gateway.vercel.sh · read 2026-08-25

Measured 14 standings

PlaceBoardMetricScore
81stof 81Forecastbench — Epoch AIOverall score50.4
90thof 217Mmlu — Epoch AIEM0.673
98thof 108Math level 5 — Epoch AImean_score11.631
106thof 106Frontiermath tiers 1 3 v2 — Epoch AImean_score0
111thof 123Lmca — Epoch AIScore9.65
125thof 127Mystery game puzzles — Epoch AImean_score3
151stof 161Dtbench — Epoch AIAccuracy48.53
168thof 170Weirdml — Epoch AIAccuracy3.48
174thof 184Artificial Analysis · Coding IndexIndex10.7
221stof 222Chess puzzles — Epoch AImean_score0
273rdof 290OTIS Mock AIME 2024-2025mean_score2.222
298thof 313GPQA Diamondmean_score27.178
321stof 402LMArena · TextScore (Elo)1225
603rdof 656Epoch capabilities index — Epoch AIECI Score115.57

About

GPT-3.5 Turbo — a text model from OpenAI, sold by 6 companies from $0.5 in and $1.5 out per million tokens, placed 90th of 217 on Mmlu — Epoch AI.

It takes text and returns text, with a context window of 16,385 tokens. It was published in March 2023, trained on material up to September 2021. The catalogue files it under reasoning and agents. Six companies sell it. The cheapest is $0.5 in and $1.5 out per million tokens at ElectronHub. Beside the standard rate there is a batch lane. It has been measured on 14 boards, and stands best at 90th of 217 on Mmlu — Epoch AI.

Every current figure

Maker
OpenAI
Register
model
Takes
text
Returns
text
Context
16,385 tokens
Longest answer
16,384 tokens
Published
March 2023
Knowledge to
September 2021
Licence
not read
Sellers
6
Price
$0.5 in and $1.5 out per million tokens — ElectronHub
Boards
14
Best place
90th of 217 — Mmlu — Epoch AI

Known as 5 names

openai/gpt-3.5-turboopenai/gpt-3.5-turbo:batchgpt-3.5-turbogpt-3.5-turbo-0125OpenAI: GPT-3.5 Turbo (batch)