📋 AI Changelog

Anthropic

9 active models · 2 deprecated · Official website →

Active Models

Claude Opus 4.6

✅ Active

Most capable Claude model with advanced reasoning and extended thinking

Context: 200K
Input: $15.00/1M
Output: $75.00/1M
textvisionextended-thinkingtool-use+1

Claude Opus 4.5

✅ Active

Premium Claude model with enhanced creative and analytical capabilities

Context: 200K
Input: $15.00/1M
Output: $75.00/1M
textvisionextended-thinkingtool-use+1

Claude Opus 4

✅ Active

First Claude 4 Opus model with breakthrough capabilities

Context: 200K
Input: $15.00/1M
Output: $75.00/1M
textvisionextended-thinkingtool-use+1

Claude Sonnet 4.6

✅ Active

Latest Sonnet model balancing performance with speed and cost

Context: 200K
Input: $3.00/1M
Output: $15.00/1M
textvisionextended-thinkingtool-use+1

Claude Sonnet 4.5

✅ Active

High-performance Sonnet model with excellent coding abilities

Context: 200K
Input: $3.00/1M
Output: $15.00/1M
textvisionextended-thinkingtool-use+1

Claude Sonnet 4

✅ Active

Balanced Claude 4 model for everyday tasks

Context: 200K
Input: $3.00/1M
Output: $15.00/1M
textvisionextended-thinkingtool-use+1

Claude Haiku 4.5

✅ Active

Fast and affordable Claude model for high-volume tasks

Context: 200K
Input: $0.80/1M
Output: $4.00/1M
textvisiontool-usecode

Claude 3.7 Sonnet

✅ Active

Hybrid reasoning model with extended thinking capabilities

Context: 200K
Input: $3.00/1M
Output: $15.00/1M
textvisionextended-thinkingtool-use+1

Claude 3.5 Sonnet

✅ Active

Widely adopted model that set new performance benchmarks

Context: 200K
Input: $3.00/1M
Output: $15.00/1M
textvisiontool-usecode

Deprecated Models

Claude 3 Opus

⚠️ Deprecated

Former flagship model, replaced by Claude 4 series

Context: 200K
Input: $15.00/1M
Output: $75.00/1M
textvisiontool-use

Claude 3 Haiku

⚠️ Deprecated

Legacy fast model, replaced by Claude Haiku 4.5

Context: 200K
Input: $0.25/1M
Output: $1.25/1M
textvisiontool-use

Change History

Mar 1, 2026New ReleaseAnthropic
Claude Opus 4.6

Claude Opus 4.6 launched with improved reasoning and coding

Mar 1, 2026New ReleaseAnthropic
Claude Sonnet 4.6

Claude Sonnet 4.6 released alongside Opus 4.6

Jan 15, 2026New ReleaseAnthropic
Claude Opus 4.5

Claude Opus 4.5 released with improved creative writing

Jan 15, 2026New ReleaseAnthropic
Claude Sonnet 4.5

Claude Sonnet 4.5 launched with improved coding performance

Nov 1, 2025New ReleaseAnthropic
Claude Haiku 4.5

Claude Haiku 4.5 released with improved speed and capability

Nov 1, 2025DeprecationAnthropic
Claude 3 Haiku

Deprecated in favor of Claude Haiku 4.5

Sep 15, 2025New ReleaseAnthropic
Claude Opus 4

Claude Opus 4 launched as most capable Claude model to date

Sep 15, 2025New ReleaseAnthropic
Claude Sonnet 4

Claude Sonnet 4 launched alongside Opus 4

Sep 1, 2025DeprecationAnthropic
Claude 3 Opus

Deprecated in favor of Claude 4 Opus

Feb 24, 2025New ReleaseAnthropic
Claude 3.7 Sonnet

Claude 3.7 Sonnet launched with extended thinking capability

Oct 22, 2024UpdateAnthropic
Claude 3.5 Sonnet

Updated Claude 3.5 Sonnet with computer use capability

Jun 20, 2024New ReleaseAnthropic
Claude 3.5 Sonnet

Claude 3.5 Sonnet launched, outperforming Claude 3 Opus

Mar 14, 2024New ReleaseAnthropic
Claude 3 Haiku

Claude 3 Haiku launched as fastest Claude model

Mar 4, 2024New ReleaseAnthropic
Claude 3 Opus

Claude 3 Opus launched as part of Claude 3 family