# frontier models (Claude Projects at AI Tinkerers

> Canonical HTML: https://aitinkerers.org/technologies/frontier-models-claude
> Markdown URL: https://aitinkerers.org/technologies/frontier-models-claude.md
> Technology record last updated: 2026-04-02T08:49:15Z
> Generated: 2026-09-23T10:37:10Z

Anthropic's Claude 3.5 Sonnet leads the frontier model class with a 92% success rate on coding tasks and human-level reasoning capabilities.

Claude represents the cutting edge of frontier AI, utilizing Constitutional AI to ensure outputs remain safe and steerable. The current flagship, Claude 3.5 Sonnet, operates at twice the speed of previous iterations while outperforming industry benchmarks in graduate-level reasoning (GPQA) and multilingual math. By integrating a 200k-token context window and advanced vision processing, these models transform complex data extraction and high-level strategic planning into instantaneous workflows.

- Official technology site: https://www.anthropic.com/claude
- Public AI Tinkerers demos and talks: 1
- Result page: 1 of 1

## Recent Public Talks and Demos

### [An Open-Source Harness for Long-Running Autonomous Agentic Development in Production](https://lausanne.aitinkerers.org/talks/rsvp_2noswA3klrA)

I built an open-source agentic coding CLI plugin that packages three requirements for reliable autonomous coding into one system: persistent semantic memory, mechanical feedback loops, and navigable task structure. It runs multi-session agentic work in dependency order, each task through a full cycle of specification, planning, test-driven implementation, multi-model review, and lesson extraction, with no shared context between sessions. I'll demo it through its benchmark: a fully functional browser-based DAW (subtractive synth, drum machine, piano roll, mixer, effects chain) built in 20 hours of unattended autonomous work. This is the same challenge Anthropic ran internally with their unpublished harness (https://www.anthropic.com/engineering/harness-design-long-running-apps, March 24 2026). The harness is open-source, and I'm deploying features and apps in production at my tech company.

- Event context: AI Tinkerers Lausanne April 2026 Meetup — 2026-04-30 — Lausanne
- Public talk page: https://lausanne.aitinkerers.org/talks/rsvp_2noswA3klrA

## Related Technologies

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- [GitHub](https://aitinkerers.org/technologies/github) ([Markdown](https://aitinkerers.org/technologies/github.md)) — 74 public demos
- [Go](https://aitinkerers.org/technologies/go) ([Markdown](https://aitinkerers.org/technologies/go.md)) — 25 public demos
- [GPT](https://aitinkerers.org/technologies/gpt) ([Markdown](https://aitinkerers.org/technologies/gpt.md)) — 26 public demos
- [LLM](https://aitinkerers.org/technologies/llm) ([Markdown](https://aitinkerers.org/technologies/llm.md)) — 123 public demos
- [Rust](https://aitinkerers.org/technologies/rust) ([Markdown](https://aitinkerers.org/technologies/rust.md)) — 56 public demos
- [Semantic embeddings](https://aitinkerers.org/technologies/semantic-embeddings) ([Markdown](https://aitinkerers.org/technologies/semantic-embeddings.md)) — 1 public demo
- [SQLite FTS5](https://aitinkerers.org/technologies/sqlite-fts5) ([Markdown](https://aitinkerers.org/technologies/sqlite-fts5.md)) — 3 public demos