---
id: "openai/gpt-3.5-turbo-16k"
also: ["openai/gpt-3.5-turbo-16k"]
card_usd_per_m: "3.0 in, 4.0 out, at openai"
cheapest_list_usd_per_m: "3.0 in, 4.0 out, at azure on openrouter"
cheapest_effective_usd_per_m: "3.0 in, 4.0 out, at azure on openrouter"
context: 16385
max_output: 4096
input: ["text"]
output: ["text"]
released: "2023-08-28"
api: ["/api/v1/chat/completions", "/api/v1/completions", "/api/v1/messages", "/api/v1/responses"]
params: ["frequency_penalty", "logit_bias", "logprobs", "max_completion_tokens", "max_tokens", "presence_penalty", "response_format", "seed", "stop", "structured_outputs", "temperature", "tool_choice", "tools", "top_logprobs", "top_p"]
endpoints: 2
gateways: "openrouter (2)"
no_training: 2
trains: 0
retains_prompts: 1
---
# OpenAI: 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...