Big events of the week for AI gateway: OpenRouter raised $1.13 billion, Portkey was acquired

Core conclusion

The AI API Gateway track will usher in a historic moment in May 2026. Within a week, two landmark events happened at the same time: OpenRouter completed a $113 million Series B financing (led by Alphabet's CapitalG, with a valuation of $1.3 billion), and Palo Alto Networks officially completed its acquisition of Portkey. The former represents the rise of independent AI model market platforms, and the latter means the integration of enterprise-level AI security infrastructure - one track has two destinies, and the AI ​​middle layer is experiencing two worlds of ice and fire.

Key Points

• Event 1: OpenRouter received $113M Series B, led by CapitalG, followed by NVIDIA, ServiceNow, MongoDB, Snowflake, Databricks, etc.
• Event 2: Palo Alto Networks completes the acquisition of Portkey, and Portkey becomes the AI Gateway for Prisma AIRS
• Common Signal: AI API gateways move from optional tool to core component of enterprise AI infrastructure
• Means for developers: AI model routing will continue to compete at reduced prices, but security and compliance thresholds will be significantly increased

Background and trigger events

On May 26, OpenRouter announced the completion of a $113 million Series B round of financing, valuing it at $1.3 billion—more than double its Series A valuation of only $547 million a year ago. The financing was led by CapitalG, Alphabet’s independent growth fund, with participation from NVentures (NVIDIA Ventures), ServiceNow Ventures, MongoDB Ventures, Snowflake Ventures, Databricks Ventures, and existing investors a16z, Menlo Ventures, and Sequoia.

This AI model aggregation platform currently processes 25 trillion tokens per week (approximately 100 trillion per month), a five-fold increase from 5 trillion half a year ago. More than 8 million developers connect to more than 400 models through a single API, spanning Anthropic, Google, OpenAI, xAI and DeepSeek.

Three days later, on May 29, Palo Alto Networks announced the completion of its acquisition of Portkey—the official completion of the deal announced on April 30. Portkey is integrated as the AI ​​Gateway of Prisma AIRS, responsible for the routing, security detection and governance control functions of AI traffic.

Source: OpenRouter official announcement (2026-05-26), Palo Alto Networks official statement (2026-05-29), TechCrunch, NYT DealBook

Key Impact

AI gateway track is greatly differentiated: a duel between two modes

Two events this week revealed a fundamental divide in the AI gateway track. Understanding this differentiation is crucial for developers to make technology selection decisions.

Community reaction

In OpenRouter's HN discussion (368 points), developers' attitudes are clearly divided:

• Many users question the long-term value of the model routing layer: "If all models go through an API, wouldn't that become a single point of failure? Your data won't go through OpenRouter's server?"
• Some developers also recognized the value of cost optimization: "Using OpenRouter as a model fallback successfully reduced API costs by 40%, and there is no need to maintain 5 different SDKs."
• Surprised at the doubling of valuation: "It just raised $40M a year ago, and now it has raised $113M, and it is still only Series B... This shows that the investment enthusiasm for AI infrastructure is far from cooling down."

Regarding the acquisition of Portkey, the community generally believes that this is "sooner or later" - when security giants such as Palo Alto Networks realize that every AI Agent call requires authentication, auditing and policy enforcement, acquiring the most mature AI gateway company is the most direct path.

Adaptation suggestions

• Recent (this week): Check if the current project depends on a single model vendor. If so, start to evaluate the configuration complexity of using OpenRouter or LiteLLM as model fallback.
• Midterm (January-March): Evaluate AI gateway deployment options if enterprise customers require AI security compliance (such as AI call logs in SOC 2 audits)
• Long-term: The AI infrastructure layer is dividing into the "efficiency group" (OpenRouter) and the "security group" (Portkey/PANW). The earlier you make technology selection, the lower your future migration costs will be.

Internal link guidance

• Want to know more about AI tool selection? See: AI 编程 Agent 技术选型：语言、模型、成本三维决策框架
• Real case: How independent developers use n8n+OpenClaw to build automated workflows with monthly income $5,000 案例详情

Tool entry

Key tools/platforms in the text include OpenRouter, Portkey, Palo Alto Networks, LiteLLM, Claude Code, DeepSeek, n8n.