OpenRouter Tutorial: How to Send an Image to an LLM via API (Vision Guide)
Score
79给出了统一的多模态请求范式，并对比了常用传图方式，信息增量明显。
内容结构清晰，步骤明确，属于官方精编教程。
开发者可直接按指南实现图像传输与多模态 RAG，实用性极强。
多模态 API 当前正热，该教程是近期发布的最新实践指引。
来自 OpenRouter 官方博客，信息可信度高。
Base 79 × T1 Source weight ×1 = 79
Curation line 60Selected
Why selected
Targeted, detailed, and from an official source, this is a highly practical technical guide.
AI commentary
「The main value of this tutorial is that it unifies image transmission across different providers into one standard, saving developers from adaptating per model. Especially useful for those building agents or multimodal applications.」
Quick overview
OpenRouter's official guide explains how to send images to any vision-capable LLM using a unified request format. It covers base64 vs hosted URLs, model selection, multiple images, tokenization, and multimodal RAG, helping developers quickly adopt multimodal API calls.
- Send images with a single request shape: a content array containing both text and image_url parts, shared by all vision models.
- Compares base64 embedding vs hosted URLs, with recommendations on when to use each.
- Covers multi-image input, tokenization, and building multimodal RAG pipelines.
Full text
Showing the source text; the full translation is being generated.
Related items
92
FeaturedOpenRouter Launches Prompt Caching with Sticky Routing to Drastically Reduce Multi-Turn Costs
OpenRouter 推出提示缓存与粘性路由，大幅降低多轮对话成本
For developers making frequent AI API calls, this feature is a direct money-saver. Sticky routing guarantees cache hit rates, and session_id requires zero configuration—every OpenRouter user should try it immediately.
FeaturedDeepSeek V4 Doubles Token Share on OpenRouter, Driven by Agentic Workloads
DeepSeek V4 在 OpenRouter 上的代币份额翻倍，智能体工作负载成主要驱动力
The rapid adoption of DeepSeek V4 signals a strong market preference for high-performance, low-cost inference models, especially as agentic use cases reshape AI deployment.
88
FeaturedOpenRouter Launches Unified Multimodal API: Single Endpoint for Image, Video, Audio, Embeddings, and Transcription
OpenRouter 推出统一多模态 API：单端点支持图像、视频、音频、嵌入与转录
This news is worth attention from all developers building multimodal AI applications: OpenRouter's unified API solves the pain of model switching, especially for startups or rapid prototyping. If you're struggling with multiple API keys and SDKs, this interface could be the unified layer you need.
86
FeaturedOpenRouter Introduces New Auto Router: Model Routing Powered by Market Wisdom
OpenRouter发布全新Auto Router：用市场智慧优化模型路由
This update is worth attention for anyone using APIs to build AI apps. Instead of guessing or testing model selection, market data now does the heavy lifting. Though sparse on details, the direction is right, especially for teams relying on aggregated model services.
84
FeaturedHow to Evaluate LLMs Before Production: Lessons from GitHub
GitHub 实战分享：如何在生产前评估 LLM
This practical guide stands out because it comes from a real security scenario, not theoretical reasoning. Teams integrating LLMs into production, especially those working on security scanning and data-sensitive engineering, should definitely read it. I recommend designing evaluation sets around your own business data rather than blindly adopting public benchmarks.
84
FeaturedOpenRouter Launches Image Model Benchmark Comparison Tool
OpenRouter 发布图像模型基准对比工具
This benchmark is a rare reference for image application developers, especially since the hard prompts highlight failure-prone details. If you care about cost and latency, bookmark this — don't choose a model by gut feeling.
84
FeaturedOpenRouter Launches Unified API for Image Generation Models
OpenRouter 推出图像生成模型统一 API 接口
As an AI developer, this update is worth your attention: it addresses the fragmentation pain point in multi-model management, especially suitable for startup teams looking to quickly prototype image generation scenarios. If you're building multimodal agents or content generation tools, OpenRouter's unified interface can save you the hassle of integrating multiple vendors.
84
FeaturedWhy Use OpenRouter for DeepSeek: Uptime, Price, and Speed Improvements
为什么通过OpenRouter使用DeepSeek：提升可用性、价格与速度
This short article precisely hits the pain point of multi-provider management for developers. If you are using DeepSeek for commercial applications, this piece alone can save you debugging time—the OpenRouter logic also applies to other popular models, worth extrapolating.