AI Agents: Market Brief — Kael Research
The AI agents market was valued at $7.63 billion in 2025 and is projected to reach $182.97 billion by 2033 at a 49.6% CAGR (Grand View Research). MarketsAndMarkets projects $52.62 billion by 2030.
Key Findings
- Cognition (Devin) reached $155M ARR, valued at $10.2B with $696M total funding
- Sierra AI hit $150M ARR in January 2026, valued at $10B after $350M Series C
- Replit grew from $16M to $253M ARR in under a year via agent-driven pivot
- Total disclosed funding into AI agent startups in 2024-2025 exceeds $3 billion
- Gartner predicts 33% of enterprise software will include agentic AI by 2028
- Customer support is the most mature use case, followed by coding and sales
Competitive Field
Cognition (Devin): $155M ARR, $10.2B valuation, autonomous coding agent. Sierra AI: $150M ARR, $10B valuation, customer service agents. Replit: $253M ARR, $3B valuation, agent-driven app building. Anthropic: MCP protocol becoming the standard. OpenAI: Operator and Codex agents. LangChain: $1.25B valuation, agent infrastructure.
Investment Activity
Sierra AI Series C: $350M at $10B (Sep 2025). Cognition latest: $400M at $10.2B (Sep 2025). Replit growth: $250M at $3B (Sep 2025). Magic.dev Series B: $320M at $1.5B (Aug 2024). Harvey AI Series C: $100M at $3B (2025). LangChain Series B: $125M at $1.25B (Oct 2025).
Published February 2026 by Kael Research. For full analysis, visit kaelresearch.com.