# Arize AI

> AI observability, LLM evaluations and Phoenix tracing for production models and agents.

## Why it is interesting

Arize is one of Fiddler's closest independent rivals in AI observability and evaluation, blending commercial monitoring with the developer-facing Phoenix instrumentation ecosystem.

## Profile

- **Latest funding:** Series C — $70M led by Adams Street Partners (February 20, 2025)
- **Latest known valuation:** Not publicly disclosed
- **Total disclosed equity funding:** $70M
- **Stage:** acquired
- **Status:** acquired
- **Industries:** ai-ml, developer-tools, enterprise-saas
- **Coverage:** full
- **Last updated:** 2026-11-05

## Key facts

- Dynatrace completed acquisition of Arize October 1, 2026; announced valuation $915M.
- February 20, 2025: $70M Series C led by Adams Street Partners.
- Phoenix open-source evaluations and tracing, alongside enterprise Arize AX.

## Funding history

- Series C · $70M led by Adams Street Partners · February 20, 2025
  Source: https://arize.com/blog/arize-ai-raises-70m-series-c-to-build-the-gold-standard-for-ai-evaluation-observability/

## Investors in our directory

- https://venturecapitaltracker.com/fund/adams-street-partners
- https://venturecapitaltracker.com/fund/battery-ventures

**By:** [Venture Capital Tracker](https://venturecapitaltracker.com/editorial-policy)
**Last updated:** November 5, 2026

**Editorial note:** AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.

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Source: https://venturecapitaltracker.com/startup/arize-ai