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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 to Sep 2021.

Creator
OpenAI
Lifecycle
Active
Context
16.4K
Max output
4.1K
Released
Aug 28, 2023
Status
up
Input
$3.00 / 1M tokens
Output
$4.00 / 1M tokens
Cached read
/ 1M tokens
Cached write
/ 1M tokens
Batch discount
%
Source
OpenRouter
Verified
Apr 5, 2026 (High)

Capabilities

Modalities
texttext
Capabilities
functionCallingstructuredOutputs
Official Links

Benchmark Coverage

BenchmarkVersionScoreDateSourceNotes

Release History

ReleaseAliasLifecycleRelease DateDeprecationShutdownSummary
GPT-3.5 Turbo 16kopenai-gpt-3-5-turbo-16kActiveAug 28, 2023Model available via OpenRouter.

Host Coverage

HostTypeContextPricing NoteDifferences
OpenRouteraggregator16.4K$3.00/1M in · $4.00/1M out via OpenRouter
Migration Guidance

Change Events
DateTypeTitleDescriptionSource
Aug 28, 2023family_addedGPT-3.5 Turbo 16k publishedModel made available via OpenRouter.OpenRouter

Other models from OpenAI

GPT Audio, GPT Audio Mini, GPT-3.5 Turbo, GPT-3.5 Turbo (older v0613), GPT-3.5 Turbo Instruct, GPT-4 (older v0314), GPT-4 Turbo, GPT-4 Turbo (older v1106), GPT-4 Turbo Preview, GPT-4.1, GPT-4.1 mini, GPT-4.1 nano, GPT-4o, GPT-4o, GPT-4o (2024-05-13), GPT-4o (2024-08-06), GPT-4o (2024-11-20), GPT-4o (extended), GPT-4o Audio, GPT-4o mini, GPT-4o mini, GPT-4o Search Preview, GPT-4o-mini (2024-07-18), GPT-4o-mini Search Preview, GPT-5, GPT-5 Chat, GPT-5 Codex, GPT-5 Image, GPT-5 Image Mini, GPT-5 Mini, GPT-5 Nano, GPT-5 Pro, GPT-5.1, GPT-5.1 Chat, GPT-5.1-Codex, GPT-5.1-Codex-Max, GPT-5.1-Codex-Mini, GPT-5.2, GPT-5.2 Chat, GPT-5.2 Pro, GPT-5.2-Codex, GPT-5.3 Chat, GPT-5.3-Codex, GPT-5.4, GPT-5.4 mini, GPT-5.4 nano, GPT-5.4 Pro, gpt-oss-120b, gpt-oss-120b, gpt-oss-20b, gpt-oss-20b, gpt-oss-safeguard-20b, o1, o1-pro, o3, o3 Deep Research, o3 Mini High, o3 Pro, o3-mini, o4 Mini Deep Research, o4 Mini High, o4-mini