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OpenAI

GPT-3.5 Turbo 16k pricing & price history

toolsopenai/gpt-3.5-turbo-16k

GPT-3.5 Turbo 16k by OpenAI costs $3.00 per 1M input tokens and $4.00 per 1M output tokens, with a 16K token context window.

$3.00Input / 1M tokens
$4.00Output / 1M tokens
16KContext window
Intelligence index

Price history

$0.00$2.30$4.60 2026-09-24today input /1M output /1M

No price changes since tracking began on 2026-09-24. We check hourly.

Cost calculator

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About GPT-3.5 Turbo 16k

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...

FAQ

How much does GPT-3.5 Turbo 16k cost?

GPT-3.5 Turbo 16k by OpenAI costs $3.00 per 1M input tokens and $4.00 per 1M output tokens, with a 16K token context window. A typical request with 2,000 input and 500 output tokens costs about $0.008.

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

GPT-3.5 Turbo 16k supports up to 16,385 tokens of context and up to 4,096 output tokens per request.

Has GPT-3.5 Turbo 16k’s price changed?

No price changes recorded since ModelBank started tracking it on 2026-09-24.

Is GPT-3.5 Turbo 16k being deprecated?

No retirement date has been announced for GPT-3.5 Turbo 16k as of 2026-09-24.

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

Cheaper options include Nemotron 3.5 Lightning ($0.08/$0.20), DeepSeek V4 Flash 0731 ($0.04/$0.32), Ministral 3 8B 2512 ($0.15/$0.15), Llama 4 Scout ($0.10/$0.30).