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Vercel AI SDK
Relay vs Vercel AI SDK
A side-by-side comparison of pricing, ratings, features, pros and cons.
| Overview | |||
| Description | Browser-first cross-AI memory sidecar that carries project context between AI chats and IDE agents. | Open-source TypeScript toolkit from Vercel for building AI applications, with unified access to 100+ models across 16+ providers and built-in streaming. | |
| Category | |||
| Developer | Relay | Vercel | |
| Verified Status | No | ||
| Last Updated | Aug 2026 | Aug 2026 | |
| Pricing | |||
| Pricing Model | Pricing not yet verified | Free | |
| Free Plan | No | Yes | |
| Free Trial | No | — | |
| Open Source | — | No | |
| Capabilities | |||
| API Access | No | — | |
| Features | • Cross-AI-platform context capture • Living, auto-updating project briefs • Context injection into new conversations • Browser-to-IDE agent synchronization • MCP integration • API access for custom integrations | • Unified API across 100+ models and 16+ providers • Built-in streaming and automatic provider fallbacks • Text, image, speech, transcription, and video generation support • Structured tool calling for building agents • Framework-agnostic (React, Next.js, Vue, Svelte, Node.js) • Free and open source (npm install ai) | |
| Tags | AI memorycontext managementMCPdeveloper tools | sdktypescriptstreaming | |
| Platforms | — | Web | |
| Mobile Apps | — | No | |
| Trust and Engagement | |||
| Review Count | 0 | 0 | |
| Saves | 0 | 0 | |
| Views | 2 | 61 | |
| Quality Score | 49/100 | 45/100 | |
| Website Status | Online | Online | |
| Availability | |||
| Website | onrelay.app | sdk.vercel.ai | |
| Social Links | 2 linked | 3 linked | |
| Screenshots | No | Yes | |
| Reviews | |||
| Pros | — | • Free to use | |
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