Cortyxia vs Letta
Cortyxia vs Letta, compared side by side on 12 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: Cortyxia is on 12/100 and Letta on 35/100.
Where each one leads
Cortyxia
Leads on none of the measures we hold for both companies.
Letta
- our overall score: 35/100 against 12/100
- agent readiness: 49/100 against 21/100
- LinkedIn following: 5,596 against 140
At a glance
| Measure | Cortyxia | Letta |
|---|---|---|
| What it is | Model-agnostic AI memory across OpenAI, Anthropic, Gemini, DeepSeek, xAI, and Groq. Research-backed savings: 80.8% fewer prompt tokens on governance evals, 91.5% on IDE sessions. Compare Cortyxia vs M | An operating system for building stateful AI agents, managing context, memory, and resource allocation. |
| Category | AI Infrastructure, Foundation Model, Large Language Model, Retrieval Augmented Generation | Agentic AI, AI Agent, Foundation Model, Operating System |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Software |
| Founded | 2026 | 2023 |
| Headquarters | Not published | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Cortyxia | Letta |
|---|---|---|
| Employees | Not published | 15 |
| LinkedIn followers | 140 | 5,596 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Cortyxia | Letta |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 12/100 | 35/100 |
| Traction | Not published | 12/100 |
| Team | Not published | 60/100 |
| Community | 13/100 | Not published |
| Search visibility | 27/100 | 32/100 |
| Agent readinessHow well an AI agent can read and act on the site | F (21/100) | D (49/100) |
| Domain ratingLink authority, 0-100 | Not published | 72/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Cortyxia | Letta |
|---|---|---|
| Hosting | Vercel | Not detected |
| CDN | Vercel | Cloudflare |
| Frameworks | Next.js, Tailwind CSS | Not detected |
| Analytics | Not detected | Plausible |
| Open source | No | Yes |
Product and pricing
| Measure | Cortyxia | Letta |
|---|---|---|
| Key features | Not published | Stateful Agent OS, Advanced Context & Memory Management, Tool Rules for Reliability, Agents-as-a-Service Deployment, Agent Development Environment, Custom Tool Integration |
What users say
| Measure | Cortyxia | Letta |
|---|---|---|
| Community ratingVisitor votes on StartupHub | 5.0/5 from 1 vote | Not published |
Cortyxia vs Letta: common questions
Which is better, Cortyxia or Letta?
On our 0-100 score Letta rates higher (35/100 against 12/100). 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 12 data points above: read the rows that match what you are buying for.
How do Cortyxia and Letta compare on the numbers?
Letta leads on our overall score (35/100 against 12/100), agent readiness (49/100 against 21/100), LinkedIn following (5,596 against 140).
Read the full Cortyxia review and pricing or the Letta review and pricing. You can also browse other Cortyxia alternatives we track.