gpt-5.4-nano

deprecatedproprietary

- Reasoning - Responses API . - Chat Completions API. - Structured outputs. - Text and image processing. - Functions, tools, and parallel tool calling. - Full summary of capabilities .

Intelligence
Reasoning
Speed
Context
400K
Max output
128K
Input price
$0.2/1M tokens
Output price
$1.25/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing

Details

Provider Azure AI Foundry
Creator OpenAI
Familygpt-5.4
Licenseproprietary
Statusdeprecated
Typechat
Input modalitiestext
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window400K tokens
Max input272K tokens
Max output128K tokens
Reasoning tokensYes
Knowledge cutoff
Release date
Deprecation date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Text tokensPer 1M tokens
InputCached inputOutput
Standard$0.2$0.02$1.25

Family Comparison: gpt-5.4

ModelContextMax out
gpt-5.4-mini400K128K
gpt-5.4-nano400K128K
gpt-5.4-pro1.1M128K
GPT-5.4 series1.1M128K
gpt-5.4.nano——

API

GET/v1/models/azure/gpt-5.4-nano

gpt-5.4-nano

deprecated

- Reasoning - Responses API . - Chat Completions API. - Structured outputs. - Text and image processing. - Functions, tools, and parallel tool calling. - Full summary of capabilities .

Changes · 5 entries
gpt-5.4-nanoupdatebc0fb7dMay 2, 2026, 02:14 AM
modalitiesinput["text","image"]→["text"]
gpt-5.4-nanoupdate1cd659eMar 24, 2026, 04:19 AM
capabilitiesjson modeyes
gpt-5.4-nanoupdate2b100acMar 23, 2026, 05:30 AM
model_typechat
tools["function_calling"]
description- Reasoning - Responses API . - Chat Completions API. - S...
tagline- Reasoning - Responses API .
gpt-5.4-nanoupdatec9a70c5Mar 21, 2026, 08:12 AM
knowledge_cutoffAugust 2025→2025-08
gpt-5.4-nanocreate7f5c66fMar 21, 2026, 05:16 AM