Building AI-Native Applications with Google Antigravity

Who Am I?

Nirmal Vyas

18+ years experience in IT field

Worked almost 10+ years in various IT companies as a Developer, Senior developer, Team lead, Project Manager etc.

Fulltime Freelancer/Consultant since last 8 + years
I do Web development projects for various clients in India and abroad, and also Technical Consultancy Services for various IT companies and startups including Brototype.
 

Website: http://codenirmal.com/

Organizer of Technical meetups in Kochi like Kerala JS, Active Member of other groups like Kochi Ruby, Kochi Python etc.

The Shift

From:
Writing code

To:
Designing systems that use reasoning engines

AI is changing development workflow

What Antigravity Really Is

Agentic Development Platform
 

AI can:
- Plan
- Implement
- Iterate
 

Intent → Plan → Execute → Review

Model Choice Becomes Critical

Model choice affects:

- Quality
- Speed
- Cost
 

Same task → different models → different results

Gemini Model Ecosystem

Gemini is a family of models

Gemini 3 Series
Gemini 2.5 Series
Specialized Models

Gemini 3 Series

3.1 Pro → deep reasoning
Flash → speed
Flash-Lite → cost efficient
Deep Think → complex problems

Gemini 2.5 Series

2.5 Pro → coding
Flash → fast reasoning
Flash-Lite → lightweight
Live → audio interaction

Specialized Models

Image → Nano Banana
Video → Veo
Music → Lyria
 

Multiple models per system

Reasoning Models

Thinking Mode

Input → Internal Reasoning → Output

Models think before responding

Adaptive Thinking

Simple tasks → fast
Complex tasks → deeper reasoning

Model adjusts effort

Interleaved Thinking

Think → Act → Re-think loop

Enables agents & multi-step reasoning

Effort Control

Low / Medium / High

Speed ↔ Accuracy

Configurable reasoning depth

Antigravity Modes

Planning Mode → plan + execute
Fast Mode → direct execution

Autonomy Levels

Review-driven → controlled
Agent-driven → autonomous
 

Control ↔ Speed

Live Demo

AI Engineering Assistant
 

Input: Logs
Output: Root cause + fix
 

Node.js + Antigravity + Gemini

Questions?

nirmalkamath@gmail.com
Whatsapp: 9895625954

Thanks!

nirmalkamath@gmail.com

http://codenirmal.com