AI Launch Profile
Claude Sonnet 4.5 launches with major coding-agent and computer-use gains
Anthropic released Claude Sonnet 4.5, positioning it as a top model for coding, complex agents, and computer use while also launching related Claude Code and Agent SDK upgrades.
At a glance
Launch Snapshot
- Company
- Anthropic
- Launch date
- September 29, 2025
- Launch type
- Model Release
- Category
- AI Agents, AI Coding Tools, AI Productivity Tools
- Audience
- AI Agent Developers, Developers
- Pricing
- API pricing remained the same as Claude Sonnet 4 at launch according to Anthropic, with app access tied to Claude plans.
- Free plan
- No
- API
- Yes
- Open weights/source
- No
Launch Context
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Verification & Sources
- Status
- Verified
- Source links
- 2
- Freshness
- Needs recheck: verified June 8, 2026
- Last verified
- June 8, 2026
- Last updated
- June 8, 2026
Key source checks
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Creator Coverage Next Steps
This launch has signals that may support demos, reviews, creator education, founder storytelling, or practical product explainers.
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Kingy AI Take
A high-signal model release for agents because Anthropic explicitly tied it to coding, computer use, and the Claude Agent SDK.
Who it is for
Engineering teams, AI-agent developers, and enterprise users who need stronger long-horizon coding and tool-use behavior.
What feels promising
The launch connected model quality, product UX, and developer infrastructure instead of treating the model as a standalone benchmark story.
What feels unproven
Model claims still need real-world validation inside each team’s toolchain, permissions, and test harness.
Source-backed record