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Epsilla (YC S23)

All-in-one platform to create AI agents with your knowledge

★★★★★ 5.0/5
FactScore™ 15.1
VS

SIMA 2

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

★★★★★ 5.0/5
FactScore™ 54

Updated February 2026

Epsilla (YC S23) SIMA 2
Rating 5.0★ 5.0★
Reviews 1 11
Pros 10 8
FactScore™ 15.1 54

FactScore™ Comparison

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

15.1
Epsilla (YC S23) FactScore™
👑
54
SIMA 2 FactScore™
★ SIMA 2 wins on FactScore™

Pros & Cons

Only in Epsilla (YC S23) — Pros

Easy to use Fast performance Helpful support High quality retrieval Knowledge search API access Community support Supports multiple data formats UI builder Vector database managed service

Both tools — Pros

—

Only in SIMA 2 — Pros

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

Only in Epsilla (YC S23) — Cons

Expensive pricing

Both tools — Cons

—

Only in SIMA 2 — Cons

—

Details

Epsilla (YC S23) SIMA 2
Categories LLMs, AI Chatbots, AI Infrastructure Tools LLMs
Platforms Web Web
Became Popular September 20, 2024 November 14, 2025
Website epsilla.com goo.gle

Who Should Pick Which?

Choose Epsilla (YC S23) if...

  • Easy to use
  • Fast performance
  • Helpful support

Choose SIMA 2 if...

  • Large context window
  • GCP integration
  • Multimodal capabilities

With a FactScore™ of 15.1 vs 54, SIMA 2 leads in community reception. Epsilla (YC S23) uniquely offers Easy to use and Fast performance, while SIMA 2 stands out for Large context window and GCP integration.

3

What Users Say

Epsilla (YC S23)

K
Kunal Oct 11, 2024
★★★★★

I did a lot of research until I found Epsilla. Epsilla is the single best tool for non-technical teams to build meaningful AI services around knowledge bases. The best part is the quality of knowle...

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.

Frequently Asked Questions

Which is better, Epsilla (YC S23) or SIMA 2?

Based on FactScore™, SIMA 2 leads with a score of 54 vs 15.1. SIMA 2 has a higher rating of 5.0★ compared to 5.0★.

What are the pros of Epsilla (YC S23) compared to SIMA 2?

Epsilla (YC S23) uniquely offers: Easy to use, Fast performance, Helpful support, High quality retrieval, Knowledge search.

What are the pros of SIMA 2 compared to Epsilla (YC S23)?

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

Is Epsilla (YC S23) better rated than SIMA 2?

Epsilla (YC S23) is rated 5.0★ from 1 reviews. SIMA 2 is rated 5.0★ from 11 reviews.

What is the FactScore™ of Epsilla (YC S23) and SIMA 2?

FactScore™ weighs rating and review volume together. Epsilla (YC S23) scores 15.1 and SIMA 2 scores 54.

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