GPT-3.5 Turbo 16k is OpenAI's language model with a 16K context window and up to 4K output tokens, available from 3 providers, starting at $3.00 / 1M input and $4.00 / 1M output. An extended-context variant of GPT-3.5 Turbo supporting up to 16,384 tokens, suitable for longer documents and multi-turn conversations.
Specifications
Canonical IDopenai-gpt-3-5-turbo-16k
TypeLanguage
StatusDeprecated
CreatorOpenAIOpenAI
Providers
Context Window16K tokens
Max Output4K tokens
Input ModalitiesText
Output ModalitiesText
Release Date · 3 years ago
Knowledge Cutoff · 5 years ago
Deprecation Date

Capabilities

Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities4/13
Reasoning·
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs✓
Native JSON Schema✓
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·

Pricing by Provider

US Dollar ($)
Per 1M tokens
ProviderStandardBatch
Input
$ / 1M
Output
$ / 1M
Input
$ / 1M
Output
$ / 1M
Azure AI Foundry logo
Azure AI Foundry
openai:gpt35trb16k
——$0.5$1.00
Azure AI Foundry logo
Azure AI Foundry
openai:gpt35turbo16k
$3.00$4.00$1.50$2.00
OpenAI logo
OpenAI
gpt-3.5-turbo-16k
$3.00$4.00——
OpenRouter logo
OpenRouter
openai/gpt-3.5-turbo-16k
$3.00$4.00——

Cost Calculator

US Dollar ($)
Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
GPT-6.1 Sol1.1M$2.00$10.00Available
GPT-6 Sol1.1M$2.00$10.00Available
GPT-6 Luna1.1M$0.100$0.500Available
GPT-6 Astra1.1M$10.00$50.00Available
GPT-5.6 Sol1.1M$4.00$20.00Available
GPT-5.6 Terra1.1M$2.00$12.00Deprecating
GPT-5.6 Luna1.1M$0.200$1.20Available
GPT-5.51.1M$5.00$30.00Available
GPT-5.4 Mini400K$0.750$4.50Available
GPT-5.4 Nano400K$0.200$1.25Deprecating
GPT-3.5 Turbo 16k16K$3.00$4.00Current

Model IDs

azure/gpt-35-turbo-16k
azure/gpt-35-turbo-16k-0613
gpt-3.5-turbo-16k
openai-gpt-3-5-turbo-16k
openai/gpt-3.5-turbo-16k
openrouter/openai/gpt-3.5-turbo-16k