AI Desk · Model IdentityWithdrawn

OpenAI: o4 Mini High (batch)

openai/o4-mini-high:batch · OpenAIDeclared and measured agree

Tokenizer lineage (measured): GPT
Evidence confidence: Very high
Declared tokenizer tag: GPT
Entered catalogue: 16 April 2025
Last tested: Not yet measured
Measurement: Variant: inherits its base model’s measurement

Evidence

✓ inherited from openai/o4-mini-high: a serving variant shares its base model's tokenizer

Compare with OpenAI: o4 Mini High

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Withdrawn from the catalogue

First absent from the snapshot of 3 September 2026

OpenAI: o4 Mini High (batch) no longer appears in the OpenRouter catalogue. The record stays here because the measurements below were real when they were taken and this address has been published. A model leaving is the kind of change this product exists to notice, so it is kept rather than deleted.

This entry is a serving variant of OpenAI: o4 Mini High. A variant shares its base model's tokenizer by construction, so the measurement lives on the base record and this page inherits it.

Identity statement

OpenAI: o4 Mini High (batch) is OpenAI's model. Its measured tokenizer sits with the GPT group, which is evidence that it builds on the GPT tokenizer. Tokenizer reuse is normal engineering, open vocabularies travel between labs, and this says nothing against OpenAI's authorship of the model itself.

Evidence stack

Signals of different kinds, weighed together

Signal	Result	Reference
Tokenizer signature	Not measured	–
API surface	Identical contract to 3 other entries	api_031f8d90
Context and output	200,000 context · 100,000 max output	declared
Reasoning contract	Mandatory · efforts high · default high	declared
Serving providers observed	None recorded yet	–

Declared record

What the catalogue claims about this model

OpenAI o4-mini-high is the same model as [o4-mini](/openai/o4-mini) with reasoning_effort set to high. OpenAI o4-mini is a compact reasoning model in the o-series, optimized for fast, cost-efficient performance while retaining...

Modalities: text+image+file->text
Declared tokenizer: GPT
Prompt price: $0.55 / M tokens
Completion price: $2.20 / M tokens

Supported parameters

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools

defaults: {"temperature":null,"top_p":null,"frequency_penalty":null}

Catalogue entry

History

Every observation, kept as taken

16 April 2025Enters the OpenRouter catalogue declared as GPT.

Cite this page as the evidence record for OpenAI: o4 Mini High (batch): the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings.