Doppel vs Gradium
Doppel vs Gradium, compared side by side on 16 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Doppel is on 63/100 and Gradium on 51/100.
Where each one leads
Doppel
- our overall score: 63/100 against 51/100
Gradium
- agent readiness: 63/100 against 25/100
- domain rating: 63/100 against 56/100
At a glance
| Measure | Doppel | Gradium |
|---|---|---|
| What it is | Outpace AI-driven attacks. Unify Digital Risk Protection, Human Risk Management, and Email Security to stop digital threats before they scale, empower your teams to lead your defense, and scale your S | Gradium builds ultra low latency voice AI models for developers. Generate expressive text to speech, accurate speech to text, and high fidelity voice clones with a single API. |
| Category | EdTech, AI-Powered Learning, Personalized Learning, Skill Development | EdTech, AI-Powered Learning, Career Development, Personalized Learning |
| Sells toBusiness model | B2B | B2C |
| Offering | Software | Software |
| Founded | 2021 | 2014 |
| Headquarters | New York, United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Doppel | Gradium |
|---|---|---|
| Employees | 345 | Not published |
| Total funding | $70.0M | $79.0M |
| Latest round | Series C | Seed |
| Valuation | $600 | Not published |
| LinkedIn followers | 19,155 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Doppel | Gradium |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 63/100 | 51/100 |
| Traction | 39/100 | Not published |
| Search visibility | 77/100 | 10/100 |
| Agent readinessHow well an AI agent can read and act on the site | F (25/100) | C (63/100) |
| Domain ratingLink authority, 0-100 | 56/100 | 63/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Doppel | Gradium |
|---|---|---|
| Hosting | Vercel | Scaleway |
| CDN | Cloudflare | Not detected |
| Frameworks | Next.js, Tailwind CSS, Bootstrap | Next.js, Tailwind CSS |
| Support stack | HubSpot | Not detected |
| Open source | No | Yes |
Doppel vs Gradium: common questions
Which is better, Doppel or Gradium?
On our 0-100 score Doppel rates higher (63/100 against 51/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 16 data points above: read the rows that match what you are buying for.
How do Doppel and Gradium compare on the numbers?
Doppel leads on our overall score (63/100 against 51/100). Gradium leads on agent readiness (63/100 against 25/100), domain rating (63/100 against 56/100).
Read the full Doppel review and pricing or the Gradium review and pricing. You can also browse other Doppel alternatives we track.

