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工具评估

AI SDK 评估：为 TypeScript 应用提供 AI 交互层

开源工具包，覆盖模型访问、流式输出、结构化结果、工具、嵌入和供应商适配。

访问官网

Editorial verdict

多供应商、结构化输出或 AI UI 是产品核心时优先评估。12

Best for

  • TypeScript products that expect to evaluate or switch among supported model providers
  • Teams that want shared application primitives for streaming, tools, and structured model output
  • Products willing to test abstraction behavior whenever providers or model capabilities change
12

不适合

  • Teams that require provider-specific APIs immediately when they are released
  • Non-TypeScript systems that would add a separate service only to use the library
  • Products treating an SDK abstraction as a substitute for model evaluation and operational controls
12
Main trade-off

应用层抽象减少重复代码，但会引入与供应商原生 API 的能力差与调试层。12

产品边界

适合需要一致的 UI 流式体验和可替换模型接口的 TypeScript 产品。

AI SDK is an application library and provider abstraction. It does not supply models, model evaluation, provider contracts, safety policy, or production observability. String model references currently use Vercel AI Gateway by default; dedicated provider packages can call providers directly, and AI Gateway remains a separate Tool and commercial boundary.12

适用范围： TypeScript teams building model-backed application features across one or more supported providers

  • A required provider capability is not represented faithfully by an adapter.
  • The application is not primarily TypeScript.
  • A single provider and its newest native APIs are an intentional product boundary.
  • The current default gateway route does not fit data, routing, pricing, or operational requirements.

为什么团队会评估 AI SDK

  • Provider abstractionSupported providers implement a shared language-model specification, which can reduce application-level switching work.1
  • Application primitivesCore APIs cover model interaction patterns including text generation, streaming, tools, structured output, and embeddings.2
  • Open-source package boundaryThe SDK can be inspected and adopted as application code without purchasing inference from the SDK itself.3

价格与计费

The open-source library has no separate software fee. Model providers, the selected gateway route, hosting, tools, storage, telemetry, and application operations create total cost; gateway and direct-provider billing must not be merged.3

Library and provider route

Open-source library with direct provider or gateway usage

Verified 2026-07-27: AI SDK has no separate inference fee; model and optional gateway usage are billed under the selected provider or gateway terms.3

Library
No separate open-source SDK inference charge3
Default path
String model references currently use Vercel AI Gateway3
Total cost
Provider or gateway usage plus hosting, tools, storage, telemetry, and operations3
价格核对日期 查看官方价格

AI SDK 与替代方案

OpenAI official SDK

Choose when
OpenAI is the intentional provider and direct access to current OpenAI APIs matters more than portability.
Avoid when
The application needs one interface across several providers.
Compared with AI SDK
First-party fidelity increases provider-specific code and migration work.9

Anthropic official SDK

Choose when
Claude is the intentional provider and native Messages, streaming, and tool semantics should remain explicit.
Avoid when
The application needs a shared provider abstraction.
Compared with AI SDK
Claude fidelity increases provider-specific integration and lifecycle dependence.10

Google Gen AI SDK

Choose when
Gemini is the selected platform and its current first-party SDK and backend boundary are deliberate.
Avoid when
The product expects frequent cross-provider switching.
Compared with AI SDK
First-party access improves Gemini fidelity while SDK and model lifecycle remain Google-specific.11

资源与来源

Official product, architecture, and pricing

  • AI SDK providers and models
    Open
  • AI SDK Core reference
    Open
  • AI SDK license
    Open

Current provider and gateway boundary

  • AI SDK choosing a provider
    Open
  • AI SDK Gateway provider
    Open
  • OpenAI SDKs and CLI
    Open
  • Anthropic TypeScript SDK
    Open
  • Gemini API libraries
    Open
  1. 1
    AI SDK providers and models

    Vercel · Accessed Official

  2. 2
    AI SDK Core reference

    Vercel · Accessed Official

  3. 3
    AI SDK license

    Vercel · Accessed Official

  4. 4
    AI SDK choosing a provider

    Vercel · Accessed Official

  5. 5
    AI SDK Gateway provider

    Vercel · Accessed Official

  6. 6
    OpenAI SDKs and CLI

    OpenAI · Accessed Official

  7. 7
    Anthropic TypeScript SDK

    Anthropic · Accessed Official

  8. 8
    Gemini API libraries

    Google · Accessed Official

  9. 9
    OpenAI JavaScript and TypeScript library

    OpenAI · Accessed Official

  10. 10
    LangChain overview

    LangChain · Accessed Official

  11. 11
    OpenAI API reference

    OpenAI · Accessed Official