Sunday

Leave it to Sunday

AI agents Consumer and social

Latest funding

$165M Series B+ · March 12, 2026

Source: SiliconANGLE

Total raised: $200M across 2 sourced rounds

All 2 rounds ↓

Website: sunday.ai.

X: @sundayrobotics · 24,121 followers.

Categories: AI agents Consumer and social.

Sectors: AI.

Subcategory: AI assistant.

Stage: Series B+.

Based in: Redwood City, United States.

Total raised: $200M in 2 sourced rounds.

Last round: Mar 12, 2026 · 245 days ago.

On Recent Funding since: Sep 22, 2026.

Signals

X account@sundayrobotics · created Oct 29, 2025 (12 months old) · 24,121 followers

Website registeredDec 16, 2017 (8 years old)

TIMELINE · MONEY RAISED

Sunday | 21 days from X account to first raise on record

@sundayrobotics·Raised $200M in 2 sourced rounds·1 signal before the first raise

Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.

Funding rounds

March 12, 2026
Series B+ · $165M · $1.15B valuation
Source: SiliconANGLE
November 19, 2025
Seed · $35M
BBenchmark (lead)
Source: wired.com
October 29, 2025
X account created
December 16, 2017
Website created

Founders and team

TZ
Tony Zhao Co-founder and CEO

@tonyzzhao · source: x.com
CC
Cheng Chi Co-founder & CTO

@chichengcc · source: x.com

Investors

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Benchmark portfolio →

Sources and API

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/sunday (get a free API key).