📋 AI Changelog

OpenAI

13 active models · 2 deprecated · Official website →

Active Models

GPT-5.4

✅ Active

Most capable GPT model with 1M context window and enhanced reasoning

Context: 1M
Input: $2.00/1M
Output: $8.00/1M
textvisionfunction-callingjson-mode

GPT-5.2

✅ Active

High-performance GPT model with 512K context window

Context: 512K
Input: $1.50/1M
Output: $6.00/1M
textvisionfunction-callingjson-mode

GPT-5.1

✅ Active

Balanced GPT-5 series model with strong reasoning capabilities

Context: 256K
Input: $1.25/1M
Output: $5.00/1M
textvisionfunction-callingjson-mode

GPT-5

✅ Active

First model in the GPT-5 series, major leap in reasoning and knowledge

Context: 128K
Input: $2.00/1M
Output: $8.00/1M
textvisionfunction-callingjson-mode

GPT-4.1

✅ Active

Enhanced GPT-4 with 1M context window and improved coding

Context: 1M
Input: $2.00/1M
Output: $8.00/1M
textvisionfunction-callingjson-mode

GPT-4.1 Mini

✅ Active

Cost-effective GPT-4.1 variant with 1M context window

Context: 1M
Input: $0.40/1M
Output: $1.60/1M
textvisionfunction-callingjson-mode

GPT-4o

✅ Active

Omni model with native multimodal capabilities

Context: 128K
Input: $2.50/1M
Output: $10.00/1M
textvisionaudiofunction-calling+1

GPT-4o Mini

✅ Active

Small, affordable multimodal model for lightweight tasks

Context: 128K
Input: $0.15/1M
Output: $0.60/1M
textvisionfunction-callingjson-mode

o4-mini

✅ Active

Compact reasoning model optimized for STEM and coding tasks

Context: 200K
Input: $1.10/1M
Output: $4.40/1M
textvisionreasoningfunction-calling

o3

✅ Active

Advanced reasoning model with breakthrough performance on complex tasks

Context: 200K
Input: $10.00/1M
Output: $40.00/1M
textvisionreasoningfunction-calling

o3-mini

✅ Active

Cost-effective reasoning model for STEM and analytical tasks

Context: 200K
Input: $1.10/1M
Output: $4.40/1M
textreasoningfunction-calling

o1

✅ Active

First-generation reasoning model with chain-of-thought

Context: 200K
Input: $15.00/1M
Output: $60.00/1M
textvisionreasoning

o1-mini

✅ Active

Compact reasoning model optimized for STEM tasks

Context: 128K
Input: $3.00/1M
Output: $12.00/1M
textreasoning

Deprecated Models

GPT-4 Turbo

⚠️ Deprecated

Previous flagship model, replaced by GPT-4o series

Context: 128K
Input: $10.00/1M
Output: $30.00/1M
textvisionfunction-callingjson-mode

GPT-3.5 Turbo

⚠️ Deprecated

Legacy model, replaced by GPT-4o Mini

Context: 16K
Input: $0.50/1M
Output: $1.50/1M
textfunction-calling

Change History

Mar 1, 2026Pricing ChangeOpenAI
GPT-5.4

Price reduced from $2.50 to $2.00 per 1M input tokens

Feb 15, 2026New ReleaseOpenAI
GPT-5.4

Initial release of GPT-5.4 with 1M context window

Jan 15, 2026UpdateOpenAI
GPT-5.2

Improved instruction following and reduced hallucination rate

Dec 10, 2025New ReleaseOpenAI
GPT-5.2

Initial release of GPT-5.2 with 512K context

Nov 15, 2025UpdateOpenAI
GPT-5.1

Improved multilingual performance

Oct 1, 2025New ReleaseOpenAI
GPT-5.1

Initial release of GPT-5.1

Sep 1, 2025Pricing ChangeOpenAI
GPT-5

Price reduced from $3.00/$12.00 to $2.00/$8.00

Aug 1, 2025New ReleaseOpenAI
GPT-5

GPT-5 launched — significant improvement over GPT-4 series

Jun 1, 2025DeprecationOpenAI
GPT-4 Turbo

Deprecated in favor of GPT-4o and GPT-5 series

May 1, 2025UpdateOpenAI
GPT-4.1

Improved function calling reliability

Apr 16, 2025New ReleaseOpenAI
o4-mini

o4-mini released with enhanced STEM reasoning capabilities

Apr 16, 2025New ReleaseOpenAI
o3

o3 launched with state-of-the-art reasoning on ARC-AGI and math benchmarks

Apr 14, 2025New ReleaseOpenAI
GPT-4.1

GPT-4.1 released with 1M context window, best-in-class coding

Apr 14, 2025New ReleaseOpenAI
GPT-4.1 Mini

GPT-4.1 Mini released alongside GPT-4.1

Jan 31, 2025New ReleaseOpenAI
o3-mini

o3-mini released as affordable reasoning model

Jan 1, 2025DeprecationOpenAI
GPT-3.5 Turbo

Deprecated — migrate to GPT-4o Mini

Dec 17, 2024UpdateOpenAI
o1

Full o1 model released with vision support and 200K context

Nov 20, 2024UpdateOpenAI
GPT-4o

gpt-4o-2024-11-20 with improved creative writing

Sep 12, 2024New ReleaseOpenAI
o1

o1-preview launched as first reasoning model

Sep 12, 2024New ReleaseOpenAI
o1-mini

o1-mini launched alongside o1-preview

Aug 6, 2024UpdateOpenAI
GPT-4o

gpt-4o-2024-08-06 update with structured outputs

Jul 18, 2024New ReleaseOpenAI
GPT-4o Mini

GPT-4o Mini launched as affordable alternative to GPT-4o

May 13, 2024New ReleaseOpenAI
GPT-4o

GPT-4o launched as first natively multimodal model

Apr 9, 2024New ReleaseOpenAI
GPT-4 Turbo

GPT-4 Turbo with Vision launched

Jan 25, 2024UpdateOpenAI
GPT-3.5 Turbo

gpt-3.5-turbo-0125 with improved accuracy

Mar 1, 2023New ReleaseOpenAI
GPT-3.5 Turbo

GPT-3.5 Turbo launched