5 free AI SDKs. Half of the paid plans start at $59 a month or less. 4 are open source. Newest check: 5 Sep 2026.
268 of 721 tools were checked against the vendor's own page in the last 30 days.
| Tool | Price from | Free plan | Runs on | Checked |
|---|---|---|---|---|
| InsForgeOpen-source AI agent backend with 12,800+ GitHub stars: $25/mo Pro, free tier. 2.4x fewer tokens than Supabase MCP on MCPMark v2. YC Spring 2026, 6-person team. | $25/mo | Yes | Web | 5 Sep |
| BAMLBAML is a free, open-source (Apache-2.0) language with 9,000+ GitHub stars for building type-safe, testable structured LLM outputs and agents. | -- | Yes | Web · Mac · Windows | 17 Aug |
| DailyDaily provides WebRTC SDKs and the open-source Pipecat framework for building realtime voice and video AI agents, with 75+ global points of presence. | -- | Yes | Web · iOS · Android | 23 Aug |
| TiptapOpen source rich text editor framework backed by a 6,000-member Discord community; Tiptap Cloud adds AI-agent editing and paid collaboration plans. | $59/mo | Yes | Web | 31 Aug |
| VeryfiVeryfi is a document-AI API that turns receipts, invoices and 40+ document types into structured JSON at 99.56% field accuracy. | $500/mo | Yes | Web · iOS · Android | 20 Aug |
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