GPT-4.1

deprecatedproprietary

Status: Deprecated · Succeeded by gpt-6-luna

Intelligence
Speed
Context
1.0M
Max output
33K
Input price
$2/1M tokens
Output price
$8/1M tokens
Snapshots

Capabilities

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

Details

Provider OpenAI
Creator openai
Familygpt-4.1
Licenseproprietary
Statusdeprecated
Typechat
Input modalitiestext, image
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window1.0M tokens
Max input—
Max output33K tokens
Reasoning tokens—
Knowledge cutoff
Release date
Deprecation date
Retirement date
Successorgpt-6-luna
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs
Web Searchweb_search
Search the web for information
File Searchfile_search
Search across uploaded files
Image Generationimage_generation
Generate images inline
Code Interpretercode_interpreter
Execute code in a sandbox
MCPmcp
Connect to Model Context Protocol servers

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
Fine-tuningPOST
Train custom models on your datahttps://api.openai.com/v1/fine_tuning/jobs

Pricing

Fine-tuning
TrainingInputCached inputOutput
Standard$25$3$0.75$12
Batch$25$1.5$0.5$6

Family Comparison: gpt-4.1

ModelContextMax outPricing
GPT-4.1 nano1.0M33K$0.1$0.4
GPT-4.1 Mini1.0M33K$0.4$1.6
GPT-4.11.0M33K$2$8

API

GET/v1/models/openai/gpt-4.1

GPT-4.1

deprecated

Status: Deprecated

gpt-4.1-2025-04-14
Changes · 14 entries
gpt-4.1updateca7a400Nov 2, 2026, 03:02 AM
descriptionGPT-4.1 excels at instruction following and tool calling,...→Status: Deprecated
statusactive→deprecated
pricingtiers[{"label":"Fine-tuning","unit":"","columns":["Training","...→[{"label":"Fine-tuning","unit":"","columns":["Training","...
tools["function_calling"]→["function_calling","web_search","file_search","image_gen...
page_urlhttps://developers.openai.com/api/docs/models/gpt-4.1?sna...→https://developers.openai.com/api/docs/models/gpt-4.1
retirement_date2027-01-14
deprecation_date2026-10-14
successorgpt-6-luna
gpt-4.1updateb2f45bfOct 29, 2026, 03:29 AM
descriptionGPT-4.1 excels at instruction following and tool calling,...→Status: Deprecated
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Fine-tuning","unit":"","columns":["Training","...
gpt-4.1update4e8b6afOct 21, 2026, 06:35 AM
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
gpt-4.1update0d5a9a1Oct 14, 2026, 06:38 AM
statusactive→deprecated
deprecation_date2026-10-14
retirement_date2027-01-14
successorgpt-6-luna
gpt-4.1update118451aSep 24, 2026, 07:08 AM
descriptionGPT-4.1 excels at instruction following and tool calling,...→GPT-4.1 excels at instruction following and tool calling,...
pricingtiers[{"label":"Fine-tuning","unit":"","columns":["Training","...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
gpt-4.1updatee3d7dedAug 31, 2026, 04:13 AM
tools["function_calling"]→["function_calling","web_search","file_search","image_gen...
page_urlhttps://developers.openai.com/api/docs/models/gpt-4.1?sna...→https://developers.openai.com/api/docs/models/gpt-4.1
gpt-4.1updatee8ec634Mar 24, 2026, 07:27 PM
knowledge_cutoff2024-05→2024-06
gpt-4.1updatefa2bbbbMar 24, 2026, 05:22 AM
capabilitiesjson modeno→yes
gpt-4.1updatef43e286Mar 24, 2026, 04:45 AM
capabilitiesjson modeyes→noreasoningnobatchyes
gpt-4.1update1cd659eMar 24, 2026, 04:19 AM
knowledge_cutoff2024-06→2024-05
capabilitiesjson modeyes
page_urlhttps://platform.openai.com/docs/models/gpt-4.1→https://developers.openai.com/api/docs/models/gpt-4.1?sna...
gpt-4.1updateb301ebeMar 23, 2026, 11:47 PM
knowledge_cutoff2024-05→2024-06
gpt-4.1update2b100acMar 23, 2026, 05:30 AM
tools["function_calling","web_search","file_search","image_gen...→["function_calling"]
licenseproprietary
page_urlhttps://platform.openai.com/docs/models/gpt-4.1
open_weightno
release_date2025-04-14
gpt-4.1updateb50649fMar 21, 2026, 11:58 PM
namegpt-4.1→GPT-4.1
pricingtiers[{"label":"Fine-tuning","unit":"","columns":["Training","...
capabilitiesstreamingyesvisionyesfine tuningyes
knowledge_cutoff2024-05
taglineSmartest non-reasoning model
tools["function_calling","web_search","file_search","image_gen...
endpoints["chat_completions","responses","assistants","batch","fin...
gpt-4.1create7f5c66fMar 21, 2026, 05:16 AM