Home › Providers › openai › OpenAI: GPT-3.5 Turbo 16k

OpenAI: GPT-3.5 Turbo 16k API Pricing

OpenAI: GPT-3.5 Turbo 16k is an API model from openai. It costs $3 per 1M input tokens and $4 per 1M output tokens. Its context window is 16,385 tokens with up to 4,096 output tokens. A workload of 10M input + 2M output tokens costs about $38 per month.
Input
$3
per 1M tokens
Output
$4
per 1M tokens
Cached input
—
per 1M tokens
Context window
16K
16,385 tokens
Blended (80/20)
$3.2
per 1M tokens

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...

How much does OpenAI: GPT-3.5 Turbo 16k cost for a real workload?

At 10M input + 2M output tokens per month, OpenAI: GPT-3.5 Turbo 16k costs about $38 ($30 input + $8 output). Try your own volumes in the cost calculator.

What are cheaper alternatives to OpenAI: GPT-3.5 Turbo 16k?

Where to run OpenAI: GPT-3.5 Turbo 16k

AI/ML API: one API key for 400+ models, including most models tracked here · Novita AI: pay-as-you-go APIs for open models (DeepSeek, Qwen, Llama and more) plus GPU cloud. Prices there follow each platform's own catalog and can differ from the list prices tracked here.

Run it on AI/ML API →Run it on Novita AI →

Disclosure: links to these platforms may be affiliate links — if you sign up or buy through them, LLMPrices may earn a commission at no extra cost to you.

Compare OpenAI: GPT-3.5 Turbo 16k with other models

OpenAI: GPT-3.5 Turbo 16k vs OpenAI: gpt-oss-20bOpenAI: GPT-3.5 Turbo 16k vs OpenAI: gpt-oss-20b (batch)OpenAI: GPT-3.5 Turbo 16k vs OpenAI: gpt-oss-120b (batch)OpenAI: GPT-3.5 Turbo 16k vs OpenAI: GPT-5 Nano (batch)OpenAI: GPT-3.5 Turbo 16k vs OpenAI: GPT-4.1 Nano (batch)OpenAI: GPT-3.5 Turbo 16k vs OpenAI: GPT-6 Luna Pro (batch)

Frequently asked questions

How much does OpenAI: GPT-3.5 Turbo 16k cost?

OpenAI: GPT-3.5 Turbo 16k costs $3 per 1M input tokens and $4 per 1M output tokens (list price, snapshot October 22, 2026). At 10M input + 2M output tokens per month that is about $38.

What is the context window of OpenAI: GPT-3.5 Turbo 16k?

OpenAI: GPT-3.5 Turbo 16k has a context window of 16,385 tokens and can return up to 4,096 output tokens per response.

What are cheaper alternatives to OpenAI: GPT-3.5 Turbo 16k?

Cheaper models include Writer: Palmyra X5 ($0.6 in / $6 out), OpenAI: GPT-4o (batch) ($1.25 in / $5 out), Google: Gemini 4 Argon (batch) ($1 in / $5 out). See the full list on this page.

Is OpenAI: GPT-3.5 Turbo 16k free to use?

No. OpenAI: GPT-3.5 Turbo 16k is a paid model at $3 input / $4 output per 1M tokens. 21 free models are listed on the free models page.

Provider: openai · Model ID: openai/gpt-3.5-turbo-16k · Modality: text->text · Price snapshot October 22, 2026, refreshed daily. How we collect prices