How much does GPT-3.5 Turbo 16k cost?

GPT-3.5 Turbo 16k costs $3.00 per million input tokens and $4.00 per million output tokens on standard pricing. A workload of 20M input and 5M output tokens a month is about $80.

What is the context length of GPT-3.5 Turbo 16k?

GPT-3.5 Turbo 16k accepts up to 16,385 tokens (16K) of input and can return up to 4,096 tokens in one response.

Does GPT-3.5 Turbo 16k support tool calling and structured outputs?

Yes, GPT-3.5 Turbo 16k supports function/tool calling and structured (JSON) outputs. Supported tools: Function calling, Structured outputs, JSON mode, Log probabilities, Deterministic seed.

What inputs and outputs does GPT-3.5 Turbo 16k support?

GPT-3.5 Turbo 16k accepts Text as input and produces Text as output.

When was GPT-3.5 Turbo 16k released?

GPT-3.5 Turbo 16k was released by OpenAI in 2023-08-28.

GPT-3.5 Turbo 16k

gpt-3.5-turbo-16k

API Provider site

This model offers four times the context length of gpt-3.5-turbo, allowing it to support approximately 20 pages of text in a single request at a higher cost. Training data: up... Built by OpenAI.

Prices updated recently

Input price

$3.00

per 1M tokens · Standard

Output price

$4.00

per 1M tokens · Standard

Input limit

16K

tokens

Output limit

tokens

Input formats

TextImageVideoAudioPDF

Output formats

TextImageVideoAudioPDF

Compare

GPT-3.5 Turbo 16k price history

2 price records since 9/25/2026

GPT-3.5 Turbo 16k cost calculator

Input20M tokens

Output5M tokens

$80/month

Standard pricing

Overview

What is GPT-3.5 Turbo 16k?

GPT-3.5 Turbo 16k is a text & reasoning model from OpenAI. This model offers four times the context length of gpt-3.5-turbo, allowing it to support approximately 20 pages of text in a single request at a higher cost. Training data: up... Its 16K context window and $3.00 input price make it a candidate for quality-focused production applications.

Content workflowsClassification

Rates

GPT-3.5 Turbo 16k pricing

Pricing is based on token usage. Provider-specific caching, batch, regional, and tool charges may affect the final cost.

Input · Standard

$3.00

Per 1M tokens

Cached input · Standard

Not available

No listed cached-input rate

Capabilities

GPT-3.5 Turbo 16k Tools

Tools available when using GPT-3.5 Turbo 16k through supported provider APIs.

Function calling

Supported

Structured outputs

Supported

JSON mode

Supported

Reasoning

Not supported

Built-in web search

Not supported

Log probabilities

Supported

Deterministic seed

Supported

Parallel tool calls

Not supported

Prompt caching

Not supported

Strengths and limitations

Strengths

Priced at $3.00 input and $4.00 output per million tokens.
A 16K context window covers most focused application workflows.
Supports text & reasoning workloads in one model.

Limitations

Real-world cost still depends on prompt length, response length and provider-specific billing rules.
The 16K context window is smaller than several long-context alternatives.
Arena Elo and MMLU-Pro are directional; test accuracy, latency and reliability on your own workload before committing.

Arena Elo, MMLU-Pro and pricing figures are illustrative; validate current vendor terms before purchase.

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