GPT-4.5 Preview

deprecatedproprietary

Status: Shut down · Succeeded by gpt-4.1

Intelligence
Speed
Context
128K
Max output
16K
Input price
$75/1M tokens
Output price
$150/1M tokens
Snapshots

Capabilities

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

Details

Model IDgpt-4.5-preview
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
Retirement date
Successorgpt-4.1
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

GPT-4.5 Preview

deprecated
gpt-4.5-preview

Status: Shut down

gpt-4.5-preview-2025-02-27
Changes · 13 entries
gpt-4.5-previewupdateca7a400Nov 2, 2026, 03:02 AM
nameGPT-4.5 Preview (Deprecated)→GPT-4.5 Preview
descriptionDeprecated - a research preview of GPT-4.5. We recommend ...→Status: Shut down
statusactive→deprecated
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
page_urlhttps://developers.openai.com/api/docs/models/gpt-4.5-pre...→https://developers.openai.com/api/docs/models/gpt-4.5-pre...
deprecation_date2025-04-14
retirement_date2025-07-14
successorgpt-4.1
gpt-4.5-previewupdateb2f45bfOct 29, 2026, 03:29 AM
descriptionDeprecated - a research preview of GPT-4.5. We recommend ...→Status: Shut down
gpt-4.5-previewupdate118451aSep 24, 2026, 07:08 AM
descriptionDeprecated - a research preview of GPT-4.5. We recommend ...→Deprecated - a research preview of GPT-4.5. We recommend ...
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
page_urlhttps://developers.openai.com/api/docs/models/gpt-4-5-pre...→https://developers.openai.com/api/docs/models/gpt-4.5-pre...
deprecation_date2025-04-14
retirement_date2025-07-14
successorgpt-4.1
gpt-4.5-previewupdatee3d7dedAug 31, 2026, 04:13 AM
statusactive→deprecated
page_urlhttps://developers.openai.com/api/docs/models/gpt-4.5-pre...→https://developers.openai.com/api/docs/models/gpt-4-5-pre...
gpt-4.5-previewupdate80c574aJun 3, 2026, 07:05 AM
nameGPT-4.5 Preview (Deprecated)→GPT-4.5 Preview
gpt-4.5-previewupdatee8ec634Mar 24, 2026, 07:27 PM
knowledge_cutoff2023-09→2023-10
gpt-4.5-previewupdatefa2bbbbMar 24, 2026, 05:22 AM
capabilitiesjson modeno→yes
gpt-4.5-previewupdatef43e286Mar 24, 2026, 04:45 AM
capabilitiesjson modeyes→nofine tuningnoreasoningnobatchyes
gpt-4.5-previewupdate1cd659eMar 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-previewupdateb301ebeMar 23, 2026, 11:47 PM
knowledge_cutoff2023-09→2023-10
gpt-4.5-previewupdate2b100acMar 23, 2026, 05:30 AM
familygpt-4.5
licenseproprietary
page_urlhttps://platform.openai.com/docs/models/gpt-4.5-preview
open_weightno
tools["function_calling"]
release_date2025-02-27
gpt-4.5-previewupdateb50649fMar 21, 2026, 11:58 PM
namegpt-4.5-preview→GPT-4.5 Preview (Deprecated)
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 large model.
capabilitiesstreamingyesvisionyestool callyesstructured outputyes
endpoints["chat_completions","responses","assistants","batch"]
gpt-4.5-previewcreate7f5c66fMar 21, 2026, 05:16 AM