gpt-4.5-preview-2025-02-27

deprecatedproprietary

Deprecated - a research preview of GPT-4.5. We recommend using gpt-4.1 or o3

Intelligence
Speed
Context
128K
Max output
16K
Input price
$75/1M tokens
Output price
$150/1M tokens
Alias ofgpt-4.5-preview

Capabilities

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

Details

Provider OpenAI
Creator openai
Familygpt-4.5
Licenseproprietary
Statusdeprecated
Typechat
Input modalitiestext, image
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window128K tokens
Max input—
Max output16K tokens
Reasoning tokens—
Knowledge cutoff
Release date
Deprecation date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Endpoints

Chat CompletionsPOST
Generate chat responses with messageshttps://api.openai.com/v1/chat/completions
ResponsesPOST
Stateful multi-turn conversationshttps://api.openai.com/v1/responses
AssistantsPOST
Persistent assistants with tools and fileshttps://api.openai.com/v1/assistants
BatchPOST
Async batch processing at lower costhttps://api.openai.com/v1/batches

Pricing

Text tokensPer 1M tokens
InputCached inputOutput
Standard$75$37.5$150

API

GET/v1/models/openai/gpt-4.5-preview-2025-02-27

gpt-4.5-preview-2025-02-27

deprecated

Deprecated - a research preview of GPT-4.5. We recommend using gpt-4.1 or o3

alias → gpt-4.5-preview
Changes · 12 entries
gpt-4.5-preview-2025-02-27updateca7a400Nov 2, 2026, 03:02 AM
statusactive→deprecated
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
gpt-4.5-preview-2025-02-27updateb2f45bfOct 29, 2026, 03:29 AM
statusactive→deprecated
gpt-4.5-preview-2025-02-27update118451aSep 24, 2026, 07:08 AM
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
gpt-4.5-preview-2025-02-27updatee8ec634Mar 24, 2026, 07:27 PM
knowledge_cutoff2023-09→2023-10
gpt-4.5-preview-2025-02-27updatefa2bbbbMar 24, 2026, 05:22 AM
capabilitiesjson modeno→yes
gpt-4.5-preview-2025-02-27updatef43e286Mar 24, 2026, 04:45 AM
capabilitiesjson modeyes→nofine tuningnoreasoningnobatchyes
gpt-4.5-preview-2025-02-27update1cd659eMar 24, 2026, 04:19 AM
knowledge_cutoff2023-10→2023-09
capabilitiesjson modeyes
page_urlhttps://platform.openai.com/docs/models/gpt-4.5-preview→https://developers.openai.com/api/docs/models/gpt-4.5-pre...
gpt-4.5-preview-2025-02-27updateb301ebeMar 23, 2026, 11:47 PM
knowledge_cutoff2023-09→2023-10
gpt-4.5-preview-2025-02-27update2b100acMar 23, 2026, 05:30 AM
familygpt-4.5
licenseproprietary
release_date2025-02-27
page_urlhttps://platform.openai.com/docs/models/gpt-4.5-preview
open_weightno
tools["function_calling"]
gpt-4.5-preview-2025-02-27updateb50649fMar 21, 2026, 11:58 PM
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
descriptionDeprecated - a research preview of GPT-4.5. We recommend ...
knowledge_cutoff2023-09
model_typechat
taglineDeprecated - a research preview of GPT-4.5.
capabilitiesstreamingyesvisionyestool callyesstructured outputyes
endpoints["chat_completions","responses","assistants","batch"]
gpt-4.5-preview-2025-02-27updatec9a70c5Mar 21, 2026, 08:12 AM
pricinginput$75output$150cached input$37.5batch input$37.5batch output$75
gpt-4.5-preview-2025-02-27create7f5c66fMar 21, 2026, 05:16 AM