About Harmonic
Harmonic is a company based in Palo Alto (United States) founded in 2023 by Tudor Achim and Vlad Tenev. It operates as a AI-as-a-Service. Harmonic has raised $295 million across 3 funding rounds from investors including Kleiner Perkins, Ribbit Capital and Sequoia Capital. Harmonic offers products and services including AI for Mathematical Reasoning. Harmonic operates in a competitive market with competitors including OpenAI, Anthropic, Krutrim, Contextual AI and 01.AI, among others.
- Headquarter Palo Alto, United States
- Founders Tudor Achim, Vlad Tenev
- SectorsTechnology
- Email••••••••
- Website harmonic.fun
- Social LinkedIn X
- Total Equity Funding$295 M (USD)
in 3 rounds
- Latest Funding Round$120 M (USD), Series C
Nov 2025
- InvestorsKleiner Perkins
& 11 more
Products & Services of Harmonic
Harmonic offers a comprehensive portfolio of products and services, including AI for Mathematical Reasoning.
AI tool developed for formal mathematical reasoning tasks.
Funding Insights of Harmonic
Harmonic has successfully raised a total of $295M across 3 strategic funding rounds. The most recent funding activity was a Series C round of $120 million completed in November 2025. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $295.0M
- Total Rounds 3
- Last Round Series C — $120.0M
- First Round $75.0M
(Sep 2024)
- Investors Count 12
All 3 funding rounds of Harmonic with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Nov 2025 | $120.0M | Series C | – | Ribbit Capital | |
| Jul 2025 | $100.0M | Series B | – | Kleiner Perkins | |
| Sep 2024 | $75.0M | Series A | – | Sequoia Capital |
12 investors in total: 9 institutional and 3 angel.
Investors in Harmonic
Harmonic has secured backing from 12 investors, including venture fund, angel, and institutional investors. Prominent investors backing the company include Kleiner Perkins, Ribbit Capital and Sequoia Capital.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Sequoia Capital is engaged in venture capital investments. | 1972 | sequoiacap.com | - | |
Venture capital investments in technology startups and entrepreneurs. | – | indexventures.com | - | |
Venture capital firm focused on early-stage big data, health tech, AI, food tech, and multiple sectors | – | gpv.com | San Francisco, United States | |
Venture capital investment firm | – | dst-global.com | Menlo Park, United States | |
Era is engaged in multi-strategy investment management for technology sectors. | – | erafunds.com | New York, United States | |
Venture capital firm investing in early-stage tech startups | 1972 | kleinerperkins.com | Menlo Park, United States | |
Venture capital investments are directed toward crypto-assets and Web3 businesses. | – | paradigm.xyz | San Francisco, United States | |
Early-stage companies in fintech and multiple sectors are invested in. | 2012 | ribbitcap.com | Palo Alto, United States | |
- | – | emersoncollective.com | - | |
NA Nikesh Arora | CEO of Palo Alto Networks, ex-Google, prominent angel investor | – | unknown_5f4a43762d8144159 | - |
Investor details for Harmonic
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
- Complete investor list
- Round participation
- Investor portfolios
- Co-investor network
Verified entity values are shown only after access is granted.
People of Harmonic
5 people are tracked at Harmonic (3 in leadership, 2 in team).
| Name | Role | Group |
|---|---|---|
Tudor Achim | Co-Founder & CEO | Leadership |
Vlad Tenev | Co-Founder | Leadership |
Vikram Shanker | Head Of Strategy And Operations | Leadership |
Kirsten Henningsgard | Recruiting | Team |
Matyas Tamas | Data | Team |
Complete people profiles for Harmonic
Full employee and board profiles, team structure, tenure and professional contact details require an active premium plan.
- Full employee list
- Team structure
- Board tenure
- Professional contacts
Verified entity values are shown only after access is granted.
Timeline of Harmonic
3 dated milestones of Harmonic across 2 years, from founding to its latest funding, stage changes and deals.
- Founded Harmonic is founded.
- Funding First funding round of $75.0M.
- Funding Latest funding round, Series C, of $120.0M.
Competitors of Harmonic
Harmonic operates in a dynamic and competitive business environment, facing competition from various established players and emerging companies in the market. The competitive landscape includes prominent companies such as OpenAI, Anthropic, Krutrim, Contextual AI and 01.AI, among others.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| openai.com | 2015 | San Francisco, United States | $57.9B | 280 | OpenAI is engaged in developing advanced artificial intelligence technologies. | |
| anthropic.com | 2021 | San Francisco, United States | $26.8B | 271 | AI models and chatbots are offered for industry applications. | |
| olakrutrim.com | 2023 | Bengaluru, India | $51.1M | 664 | AI tools and infrastructure are developed for generative applications. | |
| contextual.ai | 2023 | San Francisco, United States | $100.0M | – | Customizable generative AI is provided for content processing and interpretation. | |
| 01.ai | 2023 | Beijing, China | $300.0M | – | AI technology and applications are provided via large-scale models. |
Detailed competitors of Harmonic
The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.
- Full competitor set
- Operating metrics
- Benchmarks
- Competitive positioning
Verified entity values are shown only after access is granted.
Web traffic of Harmonic
The website of Harmonic (harmonic.fun) receives about 99.6K visits a month.
- Monthly visits99.6K
▲ 47.3% vs previous month
Websites whose visitors overlap most with Harmonic. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
mathforums.com | mathforums.com | 100% | – | #715,009 | – |
| overleaf.com | 97% | 36.7M | #1,656 | View details | |
erdosproblems.com | erdosproblems.com | 94% | – | #88,527 | – |
math-gpt.ai | math-gpt.ai | 90% | – | #85,511 | – |
| arxiv.org | 64% | 24.2M | #2,532 | View details | |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
All 7 similar websites and full traffic analytics for Harmonic
The complete similar-websites list, audience overlap and engagement analytics require an active premium plan.
- 7 similar websites
- Audience overlap
- Engagement analytics
- Traffic by brand
Verified entity values are shown only after access is granted.
Latest news on Harmonic
Complete news archive for Harmonic
Full article history, source details, and older brand coverage require an active premium plan.
- Full article archive
- Source and publication date
- Older coverage
- Brand-specific news history
Verified entity values are shown only after access is granted.
Similar companies to Harmonic
10 companies that operate in the same segment as Harmonic (AI Core Platforms & Infrastructure), ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
OpenAI is engaged in developing advanced artificial intelligence technologies. | 2015 | San Francisco, California, United States | USD 167.95 B | – | – | |
AI models and chatbots are offered for industry applications. | 2021 | San Francisco, California, United States | USD 66.81 B | – | – | |
Analytics and digital solutions for healthcare and banking are provided. | 1999 | New York, New York, United States | USD 10 M | USD 2.09 B | 59,500 | |
AI-powered graphical processing units and SoCs | 1993 | Santa Clara, California, United States | USD 5 M | USD 130.5 B | 36,000 | |
A platform for the AI community to collaborate and build. | 2016 | Paris, France | USD 399.91 M | – | – | |
Digital marketing, data analytics, and IT services are provided globally. | 1981 | Bengaluru, Karnataka, India | – | USD 19.08 B | 323,580 | |
Machine learning model development and management solutions are provided. | 2017 | San Francisco, California, United States | USD 250 M | – | 150 | |
Provider of website, web & mobile application development, BI, and digital marketing services | 2007 | Jaipur, Rajasthan, India | USD 570.12 M | USD 102.68 M | 461 | |
AI-based robotic arms are developed for industrial automation tasks. | 2010 | San Francisco, California, United States | USD 123.02 M | – | – | |
Enterprise observability solutions are delivered via cloud and AI platforms. | 2008 | San Francisco, California, United States | USD 196.44 M | – | – |
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Frequently Asked Questions about Harmonic
Harmonic was founded in 2023 and raised its 1st funding round 1 year after it was founded.
Harmonic is headquartered in Palo Alto, United States. It is registered at Palo Alto, California, United States.
Tudor Achim is the current CEO of Harmonic. They have also founded this company.
Harmonic is a funded company, having raised a total of $295M across 3 funding rounds to date. The company's 1st funding round was a Series A of $75M, raised on Sep 2024.
Solutions in artificial intelligence are developed by Harmonic, focusing on formal mathematical reasoning. The technology is applied across academic and technical sectors to support complex problem-solving and research activities.
Harmonic offers AI for Mathematical Reasoning.
Harmonic has 12 investors. Key investors include Kleiner Perkins, Ribbit Capital, Sequoia Capital, Index Ventures, and GreatPoint Ventures.