o3

reasoningdeprecatedproprietary

Status: Deprecated · Succeeded by gpt-5.6-sol

Intelligence
Reasoning
Speed
Context
200K
Max output
100K
Input price
$2/1M tokens
Output price
$8/1M tokens
Snapshots

Capabilities

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

Details

Provider OpenAI
Creator openai
Familyo3
Licenseproprietary
Statusdeprecated
Typereasoning
Input modalitiestext, image
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window200K tokens
Max input—
Max output100K tokens
Reasoning tokensYes
Knowledge cutoff
Release date
Deprecation date
Retirement date
Successorgpt-5.6-sol
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs
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
Web Searchweb_search
Search the web for information

Endpoints

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

Pricing

Text tokensPer 1M tokens
InputCached inputOutput
Standard$2$0.5$8

Family Comparison: o3

ModelContextMax outPricing
o3-mini200K100K$1.1$4.4
o3200K100K$2$8
o3-deep-research200K100K$10$40
o3-pro200K100K$20$80

API

GET/v1/models/openai/o3

o3

deprecated

Status: Deprecated

o3-2025-04-16
Changes · 14 entries
o3updateca7a400Nov 2, 2026, 03:02 AM
descriptiono3 is a well-rounded and powerful model across domains. I...→Status: Deprecated
statusactive→deprecated
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
tools["function_calling"]→["function_calling","file_search","image_generation","cod...
page_urlhttps://developers.openai.com/api/docs/models/o3?snapshot...→https://developers.openai.com/api/docs/models/o3
deprecation_date2026-06-11
retirement_date2026-12-11
successorgpt-5.6-sol
o3updateb2f45bfOct 29, 2026, 03:29 AM
descriptiono3 is a well-rounded and powerful model across domains. I...→Status: Deprecated
o3update4e8b6afOct 21, 2026, 06:35 AM
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
o3updatecfa51b9Sep 24, 2026, 09:28 AM
statusactive→deprecated
deprecation_date2026-06-11
retirement_date2026-12-11
successorgpt-5.6-sol
o3update118451aSep 24, 2026, 07:08 AM
descriptiono3 is a well-rounded and powerful model across domains. I...→o3 is a well-rounded and powerful model across domains. I...
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
o3updateab879c8Jun 18, 2026, 08:32 AM
tools["function_calling"]→["function_calling","file_search","image_generation","cod...
page_urlhttps://developers.openai.com/api/docs/models/o3?snapshot...→https://developers.openai.com/api/docs/models/o3
o3updatee8ec634Mar 24, 2026, 07:27 PM
knowledge_cutoff2024-05→2024-06
o3updatefa2bbbbMar 24, 2026, 05:22 AM
capabilitiesjson modeno→yes
o3updatef43e286Mar 24, 2026, 04:45 AM
capabilitiesjson modeyes→nofine tuningnobatchyes
o3update1cd659eMar 24, 2026, 04:19 AM
knowledge_cutoff2024-06→2024-05
capabilitiesjson modeyes
page_urlhttps://platform.openai.com/docs/models/o3→https://developers.openai.com/api/docs/models/o3?snapshot...
o3updateb301ebeMar 23, 2026, 11:47 PM
knowledge_cutoff2024-05→2024-06
o3update2b100acMar 23, 2026, 05:30 AM
tools["function_calling","file_search","image_generation","cod...→["function_calling"]
licenseproprietary
page_urlhttps://platform.openai.com/docs/models/o3
open_weightno
release_date2025-04-16
o3updateb50649fMar 21, 2026, 11:58 PM
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
descriptiono3 is a well-rounded and powerful model across domains.→o3 is a well-rounded and powerful model across domains. I...
capabilitiesstreamingyesvisionyes
knowledge_cutoff2024-05
model_typereasoning
reasoning_tokensyes
reasoning5
taglineReasoning model for complex tasks, succeeded by GPT-5
tools["function_calling","file_search","image_generation","cod...
endpoints["chat_completions","responses","batch"]
o3create7f5c66fMar 21, 2026, 05:16 AM