1.2 Trillion Parameters: Inside the $1B Brain Transplant of Siri V2

PROJECT: LINWOOD v2.5.0 ENGINE: 1.2T GEMINI CUSTOM STATUS: SYSTEM ACTIVE

The Siri Overhaul

As of early 2026, Apple has successfully deployed "Project Linwood," a total reconstruction of Siri's logic. By replacing legacy code with a massive-scale reasoning engine, Siri has evolved from a voice-trigger assistant into a proactive autonomous OS agent [1].

SPEC-01 // NEURAL CORE

1.2T Parameter Scale

Moving beyond the 150B parameter foundation, Siri utilizes a unbranded Gemini-based 1.2-trillion parameter model licensed for $1B annually [2]. This "Invisible Brain" enables deep planning and world-knowledge reasoning, while 80% of personal data processing remains local to the device.

EXAMPLE: WORLD KNOWLEDGE & SYNTHESIS "Siri, explain the recent advancements in quantum computing and draft a concise summary for my team."

SPEC-02 // AGENTIC EXECUTION

App Intents & Awareness

Siri can "see" on-screen content and execute multi-step workflows. It uses Semantic Indexing to understand the relationship between your files, contacts, and calendar events [3].

EXAMPLE: CROSS-APP ORCHESTRATION "Find the flight itinerary from my emails for next month, then add it to my calendar and send a confirmation to my spouse."

SPEC-03 // SECURITY PROTOCOLS

Private Cloud Compute

Complex reasoning that exceeds the local A19 Pro NPU (45 TOPS peak) is sent to PCC Enclaves. These stateless nodes purge all data immediately post-execution [4]. This ensures user data is cryptographically isolated from all engineers.

EXAMPLE: SECURE DATA ANALYSIS "Analyze my recent health data for anomalies and generate a privacy-preserving summary for my next doctor's appointment."

Requirement	Minimum Specification	Intelligence Tier
Device Memory (RAM)	8GB RAM Minimum	Full Agentic Access
Neural Engine (NPU)	A17 Pro / M1 (25 TOPS) or Newer	Full Agentic Access
Storage	10GB Reserved SSD Space (for local LLM cache)	NPU Cache Active
Legacy Devices	Standard iPhone 15 / 6GB RAM	Standard Siri Only

References

"The Synthetic Solution: Apple's Bold 2026 Pivot," WRAL Financial News, Dec. 29, 2025. [Online].

"Apple Just Killed Old Siri: $1 Billion Google Deal," Elephas Technical Review, Nov. 7, 2025.

"Apple's Next Big Move: AI-Powered Answer Engine," Proceed Innovative Engineering, Sep. 10, 2025.

"2026 AI Boom: Apple iPhone 17 Pro and iOS 26," RS Web Solutions Archive, Jan. 3, 2026.

"Siri Gets Google Gemini AI Power in 2026," Gadget Hacks Technical, Nov. 15, 2025.

Principal Investigator

Sankalpa Lokuliyanage

Pursuing Masters in Software (KNU) | BSc (Hons) Computer Science

Specializing in Cybersecurity & Software Architecture. Researching the bridge between planetary science and digital generative systems.

Connect on LinkedIn Technical Portfolio

From Blogger iPhone client