OpenAI: GPT-4 Turbo Preview

openai/gpt-4-turbo-preview · OpenAIUnmeasurable

Declared family: GPT
Declared tokenizer tag: GPT
Entered catalogue: 25 January 2024
Measurement: Deferred: measurement cost above the per-model cap
Evidence confidence: Unknown

What we checked

Four different kinds of evidence, and what each one showed

We checked	What we found	Where it came from
How it counts tokens	Not measured yet	we measured it
How its API is set up	Set up identically to 2 other listings, field for field	api_40bcda49
How much it can read and write	Reads up to 128,000 tokens at once, writes up to 4,096	its own listing

Declared record

What the catalogue claims about this model

The preview GPT-4 model with improved instruction following, JSON mode, reproducible outputs, parallel function calling, and more. Training data: up to Dec 2023. **Note:** heavily rate limited by OpenAI while...

Modalities: text->text
Declared tokenizer: GPT
Prompt price: $10.0 / M tokens
Completion price: $30.0 / M tokens

Supported parameters

frequency_penaltylogit_biaslogprobsmax_tokenspresence_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_logprobstop_p

defaults: {}

Catalogue entry

History

Every observation, kept as taken

25 January 2024Enters the OpenRouter catalogue declared as GPT.

* OpenAI: GPT-4 Turbo Preview no longer appears in the OpenRouter catalogue, first absent from the snapshot of 16 September 2026. The record stays because the measurements above were real when they were taken and this address has been published.