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SIMA 2

Google's most capable AI agent for virtual 3D worlds

★★★★★ 5.0/5
FactScore™ 54
VS

Private LLM

A private, on-device AI Chatbot for iOS and macOS

★★★★★ 4.7/5
FactScore™ 28.1

Updated February 2026

SIMA 2 Private LLM
Rating 5.0★ 4.7★
Reviews 11 3
Pros 8 2
FactScore™ 54 28.1

FactScore™ Comparison

FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.

👑
54
SIMA 2 FactScore™
★ SIMA 2 wins on FactScore™
28.1
Private LLM FactScore™

Pros & Cons

Only in SIMA 2 — Pros

Large context window GCP integration Multimodal capabilities Personalized insights Predictive analytics Trend detection Video input support Video understanding

Both tools — Pros

—

Only in Private LLM — Pros

Cross-device compatibility Offline functionality

Only in SIMA 2 — Cons

—

Both tools — Cons

—

Only in Private LLM — Cons

App stability issues Context sensitivity Slow performance on iPhone

Details

SIMA 2 Private LLM
Categories LLMs LLMs, AI Chatbots
Platforms Web Web · iOS
Became Popular November 14, 2025 June 6, 2023
Website goo.gle privatellm.app

Who Should Pick Which?

Choose SIMA 2 if...

  • Large context window
  • GCP integration
  • Multimodal capabilities

Choose Private LLM if...

  • Cross-device compatibility
  • Offline functionality

With a FactScore™ of 54 vs 28.1, SIMA 2 leads in community reception. SIMA 2 uniquely offers Large context window and GCP integration, while Private LLM stands out for Cross-device compatibility and Offline functionality.

3

What Users Say

SIMA 2

A
Alex Apr 3, 2024
★★★★★

With a 1M token context window, we use Gemini to collate data across companies with huge article libraries to detect trends and power predictive sales analytics to power Claude Opus.

R
rhythm Jun 8, 2025
★★★★★

Gemini 1.5 Pro offers long context, smart code gen, and seamless GCP integration—ideal for QA.

R
Rohan Oct 5, 2024
★★★★★

The only model that supports video input today, up to 50 minutes, so the only multi-modal model that enables this on the planet. Not even openAI or Anthropic supports this yet.

Private LLM

F
F Jun 7, 2023
★★★★☆

On MacOS, it seems not to recognize questions with typos; a single typo in a question will stray away from the context. Answers I get are okay for quick info, but never given specifics. iOS app is ...

J
Jonathan Oct 9, 2023
★★★★★

Tested it out on my MacBook Pro M1 Max 32GB and iPhone 12. It is working incredibly well on both. A bit slower on my iPhone, but very usable. I plan to cancel my ChatGPT Plus subscription.

Frequently Asked Questions

Which is better, SIMA 2 or Private LLM?

Based on FactScore™, SIMA 2 leads with a score of 54 vs 28.1. SIMA 2 has a higher rating of 5.0★ compared to 4.7★.

What are the pros of SIMA 2 compared to Private LLM?

SIMA 2 uniquely offers: Large context window, GCP integration, Multimodal capabilities, Personalized insights, Predictive analytics.

What are the pros of Private LLM compared to SIMA 2?

Private LLM uniquely offers: Cross-device compatibility, Offline functionality.

Is SIMA 2 better rated than Private LLM?

SIMA 2 is rated 5.0★ from 11 reviews. Private LLM is rated 4.7★ from 3 reviews.

What is the FactScore™ of SIMA 2 and Private LLM?

FactScore™ weighs rating and review volume together. SIMA 2 scores 54 and Private LLM scores 28.1.

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