Blog — OpenRouter Blog

OpenRouter Text-to-Speech: API Tutorial in 5 Minutes

Our OpenAI-compatible speech endpoint puts TTS models from Mistral, xAI, Microsoft, and more behind one request shape. Here's the path from API key to a playable MP3 in cURL, Python, JavaScript, and the OpenAI SDK, plus the response checks that keep JSON errors out of your audio files.

September 11, 2026

Zero Data Retention (ZDR): What It Means for AI APIs

ZDR means an AI provider processes your prompt, returns a response, and doesn't store either one afterward. It's a retention guarantee, not a universal privacy policy. This page explains the boundary, compares ZDR with related controls, and shows how to enforce it at the account, guardrail, or request level.

September 11, 2026

OpenRouter Fusion: How It Works and When to Use It

Fusion is our compound model. It turns one prompt into a short debate among several models: a panel answers in parallel, a judge maps agreement and disagreement, and the calling model writes the final answer. You trade some speed and tokens for quality. This is what it does, what it costs, and when to use it.

September 10, 2026

How to Use OpenRouter Presets: Config-as-Code Guide

A preset is config-as-code for your LLM calls: a named, versioned set of models, system prompts, provider routing, and sampling parameters. Define it once, reference it as @preset/your-slug everywhere, and update every app from the dashboard without a redeploy.

September 10, 2026

Nano Banana API: Edit Images with Gemini in Code

Send a source image and an edit prompt in one request, get the edited image back, and change the editing model by editing a single field. Runnable Python and TypeScript included.

September 9, 2026

Seedance 2.5 Review: What It's Best At and When to Use It

Seedance 2.5 trades resolution for length. It runs to 30 seconds and stops at 720p. We work through what it's best at, what a clip costs at each resolution, how it compares to Seedance 2.0, Wan 3.0, and Veo 3.1 on our own catalog data, and the cases where we'd recommend a different model.

September 9, 2026

In-Region Routing: Keep your data in the US or EU

US In-Region Routing is live, joining the EU. Send requests to us.openrouter.ai and they are decrypted only inside the United States and served only by providers running there, across models from OpenAI, Anthropic, Google, NVIDIA, Thinking Machines, DeepSeek, Moonshot, and Qwen.

September 9, 2026

Give any model a terminal and files

The shell server tool gives any model on OpenRouter a hosted Linux shell, and the Files API moves files in and out of it. Commands run in an isolated container, the model reads back stdout, stderr, and exit codes, and files the run writes can be downloaded afterward. Available today in beta on the Responses and Messages APIs.

September 8, 2026

How to Choose the Best AI Model (Live, in Your Editor)

There's no single best AI model, only the best model for a given task, budget, and moment. This article describes a six-step framework for choosing one, and how to run every step from your editor through the OpenRouter MCP server.

August 25, 2026

GPT 5.6 Discounts & Jevons Paradox

OpenAI introduced large discounts on their new Terra and Luna models from July 27th through August 14th. What impact did these discounts have on token volumes, total spend, and the competition?

August 25, 2026

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OpenRouter Text-to-Speech: API Tutorial in 5 Minutes

OpenRouter is Joining Stripe

Ori Eval: Find the Best Model for What You're Building

Surpassing Frontier Performance with Fusion

Zero Data Retention (ZDR): What It Means for AI APIs

OpenRouter Fusion: How It Works and When to Use It

How to Use OpenRouter Presets: Config-as-Code Guide

Nano Banana API: Edit Images with Gemini in Code

Seedance 2.5 Review: What It's Best At and When to Use It

In-Region Routing: Keep your data in the US or EU

Give any model a terminal and files

How to Choose the Best AI Model (Live, in Your Editor)

GPT 5.6 Discounts & Jevons Paradox