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Model Timeline

Timeline of GPT-3.5 Turbo

Every recorded change for this model by OpenAI, newest first. Back to the entity page →

3 events

Year

All years 2026 2025 2024 2023

Category · events in the last 365 days

All categories Benchmarks4,947 Models2,337 Companies1,601 Research1,104 Releases1,019 Providers & pricing640 Datasets146 Frameworks136 Hardware44 Pricing14 Repositories10

Filtered to one entity. Show the whole atlas

Events per month · 2 months shown

Sept 20262 May 20231

Sept 2026 2

12 Sept 2026
Context window changed

ModelGPT-3.5 TurboOpenAI

GPT-3.5 Turbo: context length changed from 4096 to 16385

Context window4.1K tokens→16.4K tokensopenrouter

openrouter.ai

11 Sept 2026

Context window changedModelGPT-3.5 TurboOpenAI

GPT-3.5 Turbo: context length changed from 16385 to 4096

Context window16.4K tokens→4.1K tokensartificial_analysis

artificialanalysis.ai

May 2023 1

28 May 2023
New modelModelGPT-3.5 TurboOpenAI
New model: GPT-3.5 Turbo (OpenAI)
openrouter
openrouter.ai

Showing up to 400 events. Narrow by year or category, or use the changes feed for cursor-paged history. Times are UTC.