This week in COSS: Dash0 acquired Polar Signals, while Stripe reportedly reached a deal to acquire OpenRouter for more than $7 billion; Dynatrace acquired Arize, and Databricks acquired Electric. Temporal is reported to be in talks to raise about $500 million at a $12 billion pre-money valuation, and Synthefy announced a $6.5 million seed round led by Wing Venture Capital.
In other news, Modular made the Mojo programming language fully open source under Apache 2.0 with LLVM exceptions; TrueFoundry launched TrueForge, an open-source, vendor-neutral alternative to Claude Managed Agents; and DeepSeek launched its MIT-licensed, plugin-based agent harness alongside DeepSeek-V4-Pro.
We also feature the following companies in Cossmology: Akon Labs, CrewAI, Predibase, Resemble AI, Sourcegraph, Synthefy, TrueFoundry, VeloDB, VictoriaMetrics, and ZenStack.
Companies mentioned: Databricks, ElectricSQL Announcement · Databricks Blog
Companies mentioned: DeepSeek Announcement · The New Stack
Companies mentioned: OpenRouter Announcement · TechCrunch
Companies mentioned: Modular Announcement · Modular Blog
Companies mentioned: Temporal Funding · Dealroom
Companies mentioned: Polar Signals, Dash0 Announcement · Dash0 Blog
Companies mentioned: Arize AI Announcement · Arize Blog
Companies mentioned: Synthefy Funding · Synthefy Blog
Companies mentioned: TrueFoundry Announcement · The New Stack
Companies mentioned: DeepSeek Announcement · VentureBeat
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Platform for fine-tuning large language models
Platform for building AI agent workflows
Voice AI platform for generation & detection
Real-time data warehouse for fast analytics.
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