An open-weight browser-action model family with screenshot-only perception and a caller-owned execution loop.
Fara1.5 supplies the action model, with separate 4B, 9B and 27B checkpoints. Use the documented Fara/MagenticLite harness to execute browser actions; this is not a managed browser subscription. The 9B card is the detailed control-surface reference here.
Fit recommendations are editorial interpretations of the documented architecture.
| CAPABILITY | DOCUMENTED STATE | SOURCE |
|---|---|---|
| model family | Fara1.5 comprises 4B, 9B and 27B browser-agent models based on Qwen3.5. | |
| interaction | The agent uses recent screenshots and emits actions sequentially; permitted actions include browser control, search and user questions. | |
| release history | The research article was released May 21, 2026; its July 22 update reports MIT-licensed weight availability. | |
| exact model identity | Microsoft publishes separate Fara1.5-4B, Fara1.5-9B and Fara1.5-27B cards, each declaring MIT. These are exact 1.5 identities, not the older Fara-7B model. | |
| weight inventory 9b | The 9B Files view lists four safetensors shards plus an index and configuration files. No model weights were downloaded or executed. | |
| vision runtime 9b | The 9B card documents screenshot-only observations rather than DOM/accessibility input, a 262,144-token context, Qwen3.5-9B base, and a caller-executed browser loop with MagenticLite/Fara CLI guidance. | |
| safety boundary | The card describes trained pause behavior and recommends sandbox/allowlist/oversight controls. Training claims do not prove enforced approval or security guarantees in every integration. |
Unknown = insufficient public evidence; No evidence = an explicit negative record; N/A = does not apply to this layer.
Current pricing is not sufficiently verified, or its 14-day review window has expired. Check the official provider before budgeting.
Stack classification: L1. Verified means the cited source supports the statement; it does not mean COMPUTER USE independently tested the product.
Exact 4B/9B/27B MIT-declared cards found; 9B four weight shard filenames visible. No weight download, execution or standalone-license/dependency audit. Use exact 1.5 card identity; keep 4B/27B weight inventories and operational validation unverified.
Conflicting or incompletely resolved evidence is not used as a numerical current value.
huggingface.co ↗ · Verified Sep 28, 2026 · Recheck every 30 days
Microsoft research article in the original ledger says 88.6; exact model card says 89.3. No matching run/version explanation found. Preserve original result observation and new conflicting card; no score substitution or formal result.
Conflicting or incompletely resolved evidence is not used as a numerical current value.
huggingface.co ↗ · Verified Sep 28, 2026 · Recheck every 30 days
Official current documentation and product sources identify Microsoft Fara1.5 in the scope described here; account access and operational readiness have not been independently tested.
Documented by the provider; not an independent execution, reliability or security test.
www.microsoft.com ↗ · Verified Sep 28, 2026 · Recheck every 14 days
Source verification added scope and decision evidence: Fara1.5 comprises 4B, 9B and 27B browser-agent models based on Qwen3.5.
Dated source ↗The Microsoft research article update announces MIT-licensed Fara1.5 weight availability. Exact model cards were checked separately.
Dated source ↗Reviewed Sep 28, 2026. Architecture recommendations are editorial analysis; linked vendor documentation supports the underlying capability and safety facts.