LLM Reference

GPT-3.5 Turbo 16k

Released
2023-06-13
Last refreshed
2026-05-11
Status
Researched 46d ago
ClassificationJSON / Tool use

GPT-3.5 Turbo 16k is worth evaluating for classification and json / tool use when its provider route and context window match the workload.

Use it for

  • Teams evaluating classification and json / tool use
  • Workloads that can use a 16k context window
  • Buyers comparing 2 tracked provider routes

Do not use it for

  • Vision or document-understanding workloads
Specifications
Family
GPT-3.5
Released
2023-06-13
Context
16k
Parameters
20B
Architecture
Decoder Only
Knowledge cutoff
2021-09
Specialization
general
Training
finetuned
Created by

Cutting-edge research and development.

San Francisco, California, United States
Founded 2015
Website
Pricing
Output / 1M
$4.00
Input / 1M
$3.00

Cheapest of 3 routes · OpenRouter

About

GPT-3.5 Turbo 16k, developed by OpenAI, is an advanced language model featuring a significantly enhanced context window of 16,384 tokens—four times larger than its predecessor's 4,096 tokens 245. This extension allows it to process and comprehend extended texts, up to approximately 20 pages, in a single interaction, while maintaining the speed and efficiency of earlier versions 10. Although it is a chat-centric model not compatible with the completions endpoint 8, it remains highly effective for tasks requiring prolonged relevance and coherence through OpenAI's API 46. With a knowledge cutoff in September 2021, it surpasses its predecessors in capability, yet it is less advanced than GPT-4 in visual and multilingual contexts 35.

GPT-3.5 Turbo 16k is a model in the GPT-3.5 family. The structured metadata tracks a 16k-token context window and structured outputs. This page tracks provider routes through Azure OpenAI, Salesforce Einstein Generative AI, and OpenRouter, with the cheapest tracked route listed at $0.5 input and $2 output per 1M tokens. No headline benchmark score is tracked for GPT-3.5 Turbo 16k yet.

Top use-case fit

Classification

Included by capability and metadata signals in the decision map.

JSON / Tool use

Included by capability and metadata signals in the decision map.

Provider price ladder

Compare all 3

Compare API pricing across 2 providers for input and output tokens, batch, and cached reads when available.

ProviderInput / 1MOutput / 1MRoute
OpenRouter$3.00$4.00
Serverless
Salesforce Einstein Generative AI--
ServerlessPartial

Capabilities

Structured Outputs

Benchmark peer barsfor Classification

No task-mapped benchmark peers are available for this model yet.

Migration checks

No linked migration route is available for this model yet.

API versions

gpt-3.5-turbo-16k-0613gpt-3.5-turbo-16k