Blogsby GlyphNov 6
Introducing the New Auto and Auto Code Routers
The next generation of Auto Router, rebuilt on a new technical foundation, plus Auto Code, a new router specialized for coding work.
OpenRouter Blog the company blog of OpenRouter: latest posts and feed
OpenRouter · Company blog · 19 a month · 170 posts since Dec 5, 2024
Nov 1
Build an AI Code Reviewer with OpenRouter
Code reviewers that only read a Git diff have to guess whether a change breaks anything, and their fixes come back as prose you apply by hand.
Oct 31
Open-Weight vs Closed-Weight Models: What's the Difference?
An open-weight model publishes its trained weights, so anyone can run, fine-tune or serve it. A closed-weight model is only available from its maker.
Oct 31
How to Build Your Own Always-On AI Agent
An always-on AI agent wakes up on a schedule, checks something with tools, and reports or acts without you asking. This tutorial builds one in TypeScript with the OpenRouter Agent SDK that watches Hacker News, remembers what it has seen...
Oct 30
Guardrails Now Separate Organization Limits from Workspace Defaults
Admins can now set organization-wide limits, give people different budgets and model access within them, and change each policy on its own. Existing guardrails keep working.
Oct 30
Claude Opus vs Sonnet vs Haiku: Which Should You Use?
Use Claude Sonnet 5.5 as your default, Haiku 5.5 for high-volume and sub-agent work, and Opus 5.5 for long tasks where a mistake is costly.
Oct 30
How Much Does Claude Code Cost? Real Session Costs by Model
Claude Code is free to install, and what you pay for is the model it calls. We publish the median cost of real Claude Code sessions on OpenRouter by model and session length.
Oct 29
How to Prevent Prompt Injection: 13 Attacks, Tested
If your app has a model read documents, emails or web pages, anyone who writes in them can try to give it instructions. We ran 25 attacks against four current models with each defense on and off.
Oct 29
How to Extract Tables from a PDF with an LLM
Send a PDF to a model that reads files, with a strict JSON schema for one row, and you get typed rows back, even from scans and tables that run across pages.
Oct 28
How we rebuilt provider routing for better, faster inference
Our default routing used to send most traffic to the cheapest provider for a model. The new routing algorithm constantly monitors the performance of every provider endpoint to optimize the balance of cost, speed, and reliability for each...
Oct 28
Hit Your Claude Code Usage Limit? How to Keep Coding
When Claude Code hits your plan's five-hour or weekly limit, you can keep working by pointing it at an OpenRouter API key. You pay per token for the same Claude models, with no usage window.
Oct 28
Claude 529 Overloaded: What It Means and How to Fix It
A 529 overloaded_error from Claude means Anthropic's API is out of capacity for the model you asked for, not that your key or plan is wrong.
Oct 27
CSAM Screening Across OpenRouter
OpenRouter will screen all inference requests for child sexual abuse material (CSAM) as they pass through our service. Screening happens in flight, during request processing.
Oct 14
Private Endpoints: Bring Your Fine-Tuned Models and Capacity to OpenRouter
Private Endpoints let Enterprise customers route their own fine-tuned models and dedicated deployments through OpenRouter, alongside the public catalog.
Oct 7
How an AI Sales Agent Saved Our Sales Team 600 Hours a Month
Rasp gives OpenRouter's five-person sales team about 600 hours a month back, adds room for two more calls a day per rep, and runs for about $30 a day on Ori.
Oct 7
ElevenLabs is now on OpenRouter
ElevenLabs is now on OpenRouter with 9 Text to Speech and 2 Speech to Text models. Deliver speech with human-like emotion with Eleven v4, give your agent low-latency replies with v4 Turbo, and turn meetings into notes that show who said...
Oct 5
Server-Side Code Execution Tools for AI Agents, Compared
A server-side code execution tool runs the model's commands in the provider's sandbox during your API request, so you don't provision or secure a container. OpenAI, Anthropic, and Google run code for their own models.
Oct 2
Model Router Benchmarks
We now benchmark model routers side by side across six suites. Our Router Index weighs quality, speed, and cost so you can decide if you need a router and pick the best one for your needs.
Oct 2
Model Routing for Support Bots: Cheap-First FAQ Handling
Cheap-first routing sends routine support questions to a small, inexpensive model and escalates selected hard or uncertain requests to a stronger one.
Oct 2
LangChain vs CrewAI: Orchestration Compared to OpenRouter-Native Routing
Multi-model orchestration is three layers. Workflow orchestration is planning, state, memory, and delegation, and LangGraph and CrewAI are built for it.
Oct 2
Agent Frameworks Compared: Tool-Calling Schema Handling
OpenAI, Anthropic, and Google each use a different request and response shape for the same tool. Agent frameworks handle that difference in different places.
Oct 1
How to Gate Pull Requests on LLM Evals in CI
A one-line prompt change can ship an agent that tells customers the wrong refund window, and nothing in a normal CI pipeline checks what the model says.
Oct 1
Cost vs. Quality Tradeoff Framework for Agent Models
The cheapest model that clears your quality bar is usually not the model at the top of a leaderboard. This framework sets the bar for one task, measures cost per quality point across a cheap, a mid-tier, and a frontier model on your own...
Oct 1
Confidence Thresholds for Model Escalation Routing
Confidence-based escalation keeps most requests on a cheap model and sends only the ones it is unsure about to a stronger one.
Sep 30
How to Test Tool-Calling Accuracy in AI Agents
An agent can call the wrong tool, or call the right tool with the wrong arguments. This guide covers three ways to test each failure mode, a Python harness that grades both, and how to run the same test cases against several tool-capable...
About this blog
OpenRouter's own blog, found on openrouter.ai by the daily check; not reviewed yet.
Posts per week, last 26 weeks
19 a month over the last six months (or since the feed's oldest post)
Posts by month
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AI and agents (56), Developer tools (23), Product and company (16) in the last six months.
OpenRouter
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History
Official checkSep 25
not reviewed to official: on openrouter.ai