AIsa vs Vercel AI Gateway
Vercel AI Gateway unifies model access for apps built with the Vercel AI SDK. AIsa unifies model access and the data, tool and SaaS APIs agents need, with a prepaid wallet, budget limits and approval before paid actions.
Platform comparisonUpdated
The short answer
Vercel AI Gateway is the natural choice if your application is built on the Vercel AI SDK and the only thing it needs from a gateway is models with one bill. AIsa covers the same model gateway role from any SDK, then adds a catalog of data and tool APIs and Agent Skills, and wraps every paid call in wallet-level budget controls with user approval above a threshold. Choose AIsa when the agent must act on external data or make purchases, or when you are not on Vercel.
Choose AIsa when
- Your agent needs data, tools or SaaS actions as well as models.
- You are not building on the Vercel AI SDK or the Vercel platform.
- You want paid actions to pause for approval instead of only being capped.
- You want other agents to discover your capabilities through Agent Card and MCP.
Choose Vercel AI Gateway when
- Your app already uses the Vercel AI SDK and deploys on Vercel.
- You want zero extra configuration for model switching and unified model billing.
- Models are the only external resource the app consumes.
AIsa vs Vercel AI Gateway at a glance
| Dimension | AIsa | Vercel AI Gateway |
|---|---|---|
| Primary scope | Models, APIs, real-time data, SaaS tools and Agent Skills behind one account | Model routing and unified billing for AI SDK apps |
| SDK dependency | None; OpenAI-compatible endpoints work with any client | Best with the Vercel AI SDK; OpenAI-compatible access also available |
| Non-model APIs (search, finance, company, social, SEO) | Built in, same key and billing | Not part of the gateway |
| Prebuilt agent workflows | Agent Skills | No; you build with the SDK |
| Budget controls | Prepaid wallet, limits per key and per task, per-call metering | Spend visibility and limits on the Vercel account |
| Approval before paid execution | Yes, above a configurable threshold | No built-in approval step |
| Machine discovery | A2A Agent Card, MCP catalogue, OpenAPI 3.1, llms.txt | Model list endpoint |
| Hosting | Independent of where the agent runs | Part of the Vercel platform |
Same gateway role, different reach
Both products let an application call many model providers through one endpoint and receive one bill. Vercel AI Gateway is tightly integrated with the AI SDK, which makes model switching almost free for teams already on that stack. AIsa provides the same OpenAI-compatible surface without a framework assumption, so Python agents, LangChain, custom runtimes and coding agents all connect the same way.
Beyond models: APIs the agent can use out of the box
A gateway that only routes models leaves the rest of an agent's supply chain to you: search, market data, company enrichment, social signals, SEO metrics, email. AIsa lists those as catalog entries next to the models, each with a route, a price unit and an example response, callable with the same key and metered on the same wallet.
- Search and research, financial and prediction-market data, company and people enrichment.
- Social and media data across Twitter, Reddit, Instagram and Pinterest.
- SEO and traffic intelligence from DataForSEO, Ahrefs, Semrush and Similarweb.
Spend that waits for consent
Vercel gives you spend visibility and limits at the account level. AIsa meters every call against a prepaid wallet and can hold a paid action above a threshold until the user approves it. For agents that buy data or trigger external actions, that consent step is what keeps autonomy from turning into an unbounded bill.
Common questions
- Can I use AIsa from the Vercel AI SDK?
- Yes. Configure an OpenAI-compatible provider in the AI SDK with AIsa's base URL and API key. Model names follow the provider identifiers listed in the AIsa catalog.
- Is AIsa OpenAI-compatible?
- Yes. Model inference on AIsa is exposed through OpenAI-compatible endpoints such as /v1/chat/completions and /v1/responses, plus /v1/messages for Anthropic-style requests, so existing SDKs work by changing the base URL and API key.
- What does AIsa offer beyond model routing?
- A catalog of ready-to-call APIs for search, research, financial and market data, company and people data, social media and SEO, plus task-oriented Agent Skills that package several of those calls behind one interface. All of it is billed to the same account and key as model usage.
- How does AIsa control agent spend?
- Usage is metered per call against a prepaid wallet with budget limits. Paid actions that exceed a configured threshold are not executed until the user or operator approves them, which keeps an autonomous agent from spending beyond what it was authorized to spend.
- Does Vercel AI Gateway include data or tool APIs?
- No. It routes and bills model calls. Data sources and tool integrations remain separate services that you integrate and pay for directly.
Try AIsa with your own agent.
One OpenAI-compatible key for models, data APIs and Agent Skills, with budget limits and approval before paid actions.