Coding agent
Claude Code ↗
A coding agent that works with project files and development tools.
Official product / docs →Anthropic · Claude models
Anthropic Claude
SOURCE CHECK
Anthropic develops the Claude model family and agent products for coding and knowledge work. Its API models, ready-to-use agents and developer SDK serve different needs.
Latest briefings
Latest models & families
As listed on 2026-10-23Selected current official listings; specialized models and access stages are identified separately.
| Model / family | Positioning & use |
|---|---|
| Claude Fable 5.1 ↗Advanced reasoning | Positioned for demanding reasoning and long-horizon agent work. |
| Claude Opus 5.5 ↗General-purpose | The current model overview recommends starting here for most workloads. |
| Claude Sonnet 5.5 ↗Model | A current Claude family option for coding and everyday work. |
| Claude Haiku 5.5 ↗Small model | The small-model option in the current Claude lineup. |
Agent tools & products
Research preview
Claude Duet ↗
A proactive agent app in research preview; its initial rollout uses a waitlist and eligibility restrictions.
Official product / docs →Developer SDK
Claude Agent SDK ↗
Build custom agent workflows using Claude Code’s tools and agent loop.
Official product / docs →Where to start
Use Claude Code for repository work, Duet for eligible proactive workflows, and the SDK when you need your own application. A model name alone does not include these product capabilities.
YYSI coverage
PUBLISHED
Agents & tools Anthropic
Agent Skills moves to the Agentic AI Foundation
Anthropic announced a governance change for Agent Skills. Our briefing explains what it could mean for reusable workflows, and why portability still needs checking.
Official sources
Checked 2026-10-23 · Original introductions based on vendor documentation, not hands-on reviews.
- Claude Fable 5.1 ↗platform.claude.com
- Claude Code ↗code.claude.com
- Claude Duet ↗claude.com
- Claude Agent SDK ↗code.claude.com
Availability and product terms can change. Current means checked on the date above, not a live feed or a claim to list every model.