GPT-3.5 Turbo
OpenAI's optimized and cost-effective conversational model
GPT-3.5 Turbo
OpenAI • March 2023
Training Data
Up to September 2021
GPT-3.5 Turbo
March 2023
Parameters
~175 billion
Training Method
Reinforcement Learning
Context Window
16,385 tokens
Knowledge Cutoff
September 2021
Key Features
Chat Optimized • Function Calling • Fast Response
Capabilities
Reasoning: Very Good
Coding: Very Good
Creative: Good
What's New in This Version
Faster and more cost-effective than GPT-4 for many tasks
OpenAI's optimized and cost-effective conversational model
What's New in This Version
Faster and more cost-effective than GPT-4 for many tasks
Technical Specifications
Key Features
Capabilities
Other OpenAI Models
Explore more models from OpenAI
GPT-5.6 Sol
OpenAI's flagship GPT-5.6 model — its most capable system yet for complex coding, cybersecurity, and scientific reasoning, with new max reasoning effort and ultra subagent mode
GPT-5.6 Terra
The balanced mid-tier of the GPT-5.6 family — matches GPT-5.5 quality on high-volume business tasks at roughly half the price
GPT-5.6 Luna
The fastest, most cost-efficient GPT-5.6 model — strong everyday capability at OpenAI's lowest price for summarization, drafting, and routine automation
