OpenRouter
:free variants: 20 req/min; 50 req/day (under 10 credits purchased) or 1000 req/day (10+ credits)
打开第一次调用教程Open first-call guide →Free AI Index / 从零开始Getting started
按提供商查看注册前提、获取密钥、安装 SDK、发送请求、检查响应和排查常见错误。各家的免费范围、地区与账户要求不同,调用前先核对官方来源和对应资源页。Follow each provider's signup, API key, SDK, first request, response check and troubleshooting steps. Free access, region and account requirements vary; verify official sources and the linked offer before calling.
API Key 能调用不等于当前有免费额度。DeepSeek 官方 API 是按量计费;页面会明确标出。其他提供商的免费条件也可能按模型、地区、身份或活动变化。An API key does not mean an API call is free. DeepSeek's official API is pay-as-you-go; the guide labels this clearly. Other providers' terms can also vary by model, region, identity or promotion.
:free variants: 20 req/min; 50 req/day (under 10 credits purchased) or 1000 req/day (10+ credits)
打开第一次调用教程Open first-call guide →Free plan with per-model RPM / RPD / TPM limits (e.g. gpt-oss-120b: 30 RPM · 1K RPD · 8K TPM)
打开第一次调用教程Open first-call guide →Free tier: input, output and context caching listed as Free of charge
打开第一次调用教程Open first-call guide →Selected official ¥0 models now include China Telecom Xing4.0-29B alongside OCR, embedding, reranker and image models.
打开第一次调用教程Open first-call guide →中国站:仅华北2(北京)符合条件的模型享新人免费额度;通常每模型 1,000,000 Tokens、90 天有效,具体以模型价格页为准。
百炼官方模型页当前将 decision-model-preview 在北京和新加坡的调用价格都标为“限时免费”。
智谱 BigModel 官方注册页当前标注:新用户免费赠送专享 20,000,000 Tokens 体验包。
打开第一次调用教程Open first-call guide →Pay-as-you-go; not a free quota. V4.1 Flash replaced the retired V4 Flash model.
打开第一次调用教程Open first-call guide →NVIDIA API Catalog 当前显示 38 个 Free Endpoint;免费 NVIDIA Developer Program 可访问托管 NIM API endpoints。
打开第一次调用教程Open first-call guide →