— AI Model

Claude 3.5

Last updated 2026-07-13 · Reviewed by ToolForge Editorial

Anthropic's 2024 breakthrough — best-in-class coding, vision, and agentic computer use.

★ 4.8/5 · Tens of millions · Since 2024 · Free tier available

The model that reset the coding bar

Claude 3.5 (Sonnet and Haiku) arrived in 2024 and immediately topped coding and vision benchmarks. Its Artifacts feature turned Claude from a chat box into a lightweight app builder, and computer use pointed toward fully agentic workflows.

Who it's for: Engineers, analysts, and knowledge workers who want top-tier coding and document understanding without paying for a frontier plan.

Key features

Sonnet + Haiku Two sizes

Pick 3.5 Sonnet for depth or 3.5 Haiku for speed and cost.

Computer use Agentic control

Claude can click, type, and navigate software like a human operator.

Artifacts Live outputs

Render code, docs, and SVGs in a side panel as you work.

Vision Document understanding

Read complex PDFs, charts, and handwritten notes accurately.

The honest take

✓ What works

  • Best coding model of its era
  • Artifact workspace is genuinely useful
  • Strong safety and instruction-following
  • Free tier is very capable

✗ What doesn't

  • Knowledge cutoff predates newer models
  • Computer use is still experimental
  • No image generation
  • Limits on long sessions

Verdict

Claude 3.5 remains one of the best free-tier AI models in 2026 for coding and analysis. If you need the newest capabilities, step up to Claude Opus 4 or Sonnet 4 — but 3.5 is still excellent and free.

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