Anthropic
Safety-first frontier AI research lab
Builds reliable, interpretable, and steerable AI systems. Maker of Claude.
- Stage
- Series D
- Raised
- $18B
- Last round
- $4.0B
- HQ
- San Francisco, CA
Startups · Ecosystem
The companies building it
A running index of AI startups from Y Combinator, TechCrunch, and venture-backed rounds — ordered by latest round.
- Tracking
- 18
- Combined raised
- $37.4B
- Updated
- Apr 23
VC-backed
Perplexity
Answer engine for the web
Conversational search grounded in real-time sources.
- Stage
- Series C
- Raised
- $1.0B
- Last round
- $500M
- HQ
- San Francisco, CA
Mistral AI
Open and efficient frontier models, from Paris
European AI lab shipping open-weight and commercial LLMs.
- Stage
- Series B
- Raised
- $1.1B
- Last round
- $640M
- HQ
- Paris, France
Cognition
Building Devin, the autonomous software engineer
Agentic coding platform that plans, writes, and ships.
- Stage
- Series B
- Raised
- $196M
- Last round
- $175M
- HQ
- San Francisco, CA
Harvey
Domain-specific AI for elite law firms
Copilot for attorneys — drafting, research, and diligence.
- Stage
- Series C
- Raised
- $506M
- Last round
- $300M
- HQ
- San Francisco, CA
Glean
AI-powered workplace search
Unified enterprise search and AI assistant across work apps.
- Stage
- Growth
- Raised
- $606M
- Last round
- $260M
- HQ
- Palo Alto, CA
Groq
LPUs for real-time inference
Custom language-processing silicon delivering record throughput.
- Stage
- Series D
- Raised
- $1.0B
- Last round
- $640M
- HQ
- Mountain View, CA
LangChain
The framework for LLM-native applications
Open-source orchestration plus LangSmith eval and observability.
- Stage
- Series A
- Raised
- $35M
- Last round
- $25M
- HQ
- San Francisco, CA
Together AI
The cloud for open-source AI
Training and serving infrastructure tuned for open models.
- Stage
- Series B
- Raised
- $229M
- Last round
- $106M
- HQ
- San Francisco, CA
ElevenLabs
Voice AI for the creative stack
High-fidelity TTS, dubbing, and voice cloning.
- Stage
- Series C
- Raised
- $281M
- Last round
- $180M
- HQ
- London, UK
Sakana AI
Nature-inspired foundation models, from Tokyo
Research lab exploring evolutionary and collective intelligence methods.
- Stage
- Series A
- Raised
- $214M
- Last round
- $214M
- HQ
- Tokyo, Japan
Hebbia
Agentic knowledge work for analysts
Retrieval and reasoning on unstructured financial and legal documents.
- Stage
- Series B
- Raised
- $161M
- Last round
- $130M
- HQ
- New York, NY
Cartesia
Real-time multimodal foundation models
State-space models powering low-latency voice and streaming applications.
- Stage
- Series A
- Raised
- $91M
- Last round
- $64M
- HQ
- San Francisco, CA
Sierra
Conversational AI for consumer brands
Bret Taylor's post-Salesforce company — an agent platform grounded in company policy.
- Stage
- Series B
- Raised
- $285M
- Last round
- $175M
- HQ
- San Francisco, CA
Physical Intelligence
General-purpose foundation models for robots
Training large behavior models (π-series) that transfer across robots and tasks.
- Stage
- Series B
- Raised
- $470M
- Last round
- $400M
- HQ
- San Francisco, CA
xAI
Understanding the true nature of the universe
Elon Musk's AI lab — Grok frontier models and the Colossus training cluster.
- Stage
- Series C
- Raised
- $12B
- Last round
- $6.0B
- HQ
- San Francisco Bay Area, CA
Figure
Humanoid robots for commercial work
Full-stack humanoid hardware and AI for manufacturing and logistics.
- Stage
- Series C
- Raised
- $854M
- Last round
- $675M
- HQ
- Sunnyvale, CA
Writer
The full-stack generative AI platform for enterprises
In-house Palmyra models plus a knowledge-graph-backed workspace for large teams.
- Stage
- Series C
- Raised
- $326M
- Last round
- $200M
- HQ
- San Francisco, CA