# OpenAI: GPT-3.5 Turbo 16k

OpenAI: GPT-3.5 Turbo 16k offers a 16,385-token context window at $3.00 per 1M input tokens and $4.00 per 1M output tokens. Supported inputs: text. Data via OpenRouter /models, as of Oct 29, 2026.

Source: **OpenRouter /models** · _as of Oct 29, 2026_

[OpenRouter model catalogue feed](https://openrouter.ai/api/v1/models)

- [OpenAI: GPT-3.5 Turbo 16k source listing](https://openrouter.ai/openai/gpt-3.5-turbo-16k)

These are provider-catalog specifications, not a task-quality benchmark. Prices describe the source listing and may vary by provider or routing. Unknown values are shown as — when the feed did not supply that value.

## Specifications

| Context window | 16,385 tokens |
| --- | --- |
| Input price | $3.00 / 1M tokens |
| Output price | $4.00 / 1M tokens |
| Input modalities | text |
| Output modalities | text |
| Model id | openai/gpt-3.5-turbo-16k |

## Frequently asked questions

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

OpenAI: GPT-3.5 Turbo 16k supports up to 16,385 tokens of context.

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

$3.00 per 1M input tokens and $4.00 per 1M output tokens (via OpenRouter /models, as of Oct 29, 2026).

### What input types does OpenAI: GPT-3.5 Turbo 16k support?

OpenAI: GPT-3.5 Turbo 16k accepts text.

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Source: https://prompeteer.ai/models/openai-gpt-3-5-turbo-16k