Claude Sonnet 4
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A to Z
- A · App
- Yes
- B · Built By
- Anthropic
- C · CEO & Politics
- Dario Amodei — Pro-AI-regulation; first-ever $1M personal donation to bipartisan Public First super PAC (Jul 2026); otherwise avoids partisan politics
- D · Date
- 2025
- E · Expertise
- Beginner (app available)
- F · Free Tier
- Yes
- G · Generates
- Text only
- H · Deployment
- Cloud (API + claude.ai)
- I · Inputs
- Text
- J · Jurisdiction
- USA
- K · Key Staffers
- Daniela Amodei (President), Tom Brown (Co-Founder)
- L · Languages
- English-primary
- M · Model Type
- LLM
- N · Safety Issues
- None reported
- O · Open Source
- Proprietary
- P · Pricing
- Retired (Claude API retired Claude Sonnet 4 on June 15, 2026)
- Q · AIDb Rating
- 5/10 · AIDb v2.0 (curated): Capability 6/10 · Currency 2/10 · Access 7/10 · Significance 6/10 → 5.35
- R · What Makes It Special
- Anthropic's Claude Sonnet 4 (May 22, 2025), a significant upgrade to Claude 3.7 Sonnet with state-of-the-art coding (72.7% on SWE-bench), more precise instruction following and 65% less shortcut-taking on agentic tasks; a hybrid model with near-instant answers or extended thinking, it was open to free Claude users, cost $3/$15 per million API tokens and was picked by GitHub to power the new coding agent in GitHub Copilot. Retired June 15, 2026.
- S · Stock / Status
- Private ($380B valuation, Feb 2026); confidentially filed for IPO Jun 1, 2026
- T · Training Cutoff
- [UNKNOWN]
- U · Users
- [UNKNOWN]
- V · Voice Chat
- Yes
- W · Weights
- API only
- X · X Handle
- @AnthropicAI
- Y · Year Founded
- [UNKNOWN]
- Z · Bottom Line
- Proprietary LLM from Anthropic, released 2025.
Data completeness 88% · Last verified 2026-08-09 · Primary source ↗
Cite this
“Claude Sonnet 4.” AIDb — The AI Database. Verified 2026-08-09. https://theaidatabase.com/m/anthropic-claude-sonnet-4.html
More from Anthropic
Claude · Claude 2 · Claude 2.1 · Claude 3 · Claude 3 Haiku · Claude 3 Opus · Claude 3 Sonnet · Claude 3.5