Prometheus vs Weaviate
Side-by-side trajectory, velocity, and editorial themes.
Prometheus enters 3.12 RC while running a coordinated security backport across the 3.5 LTS line.
Prometheus published a 3.12.0 release candidate with PromQL and Service Discovery additions, TSDB performance work, and security fixes for a remote-write denial-of-service and a STAC secret leak. In the same window, 3.11.3 and 3.5.3 shipped coordinated security fixes for snappy decoding, AzureAD client_secret handling, and an old-UI XSS, and the prior 3.11.2/3.5.2 pair fixed a metric-name XSS in the web UI. The project is clearly maintaining 3.5 as a long-term branch alongside the active 3.x line.
Cadence is dominated by responsible-disclosure security work, with feature additions concentrated in the upcoming 3.12 release. The fact that 3.5 keeps receiving coordinated backports months after 3.11 suggests Prometheus is informally treating 3.5 as a stable LTS for environments that cannot upgrade quickly.
Expect 3.12.0 to ship final within a few weeks given the RC has already landed, and a 3.5.4 backport to follow the next security disclosure rather than the next feature batch.
Weaviate is rebuilding around agent memory and MCP, not just vector storage.
Weaviate's recent feed is anchored by two strategic releases: the 1.37 release with a built-in MCP Server, Diversity Search, and Query Profiling, and Engram — a managed memory service for agents. Surrounding work makes the AI-native database real on more clouds (Shared Cloud GA on AWS US-East and Europe) and surfaces (C# managed client, hybrid-search tokenization improvements). Engineering blogs lean into RAG quality and multimodal embeddings.
The product is rotating from 'vector database' positioning toward 'memory and retrieval substrate for AI agents.' The combination of MCP server in core, Engram as a managed offering, and dogfooding inside Claude Code suggests agent memory is the next category Weaviate intends to own — distinct from raw vector storage, where Pinecone and Pgvector continue to crowd the market.
Expect Engram to expand integrations beyond Claude Code (Cursor, Cline, custom agent frameworks) and a clearer pricing surface for memory-as-a-service. The MCP server in 1.37 should evolve from preview to GA with curated tool catalogs.
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