Engineering Insights

GPT 5.1 Codex Max now available on Vercel AI Gateway

You can now access OpenAI's latest Codex models, GPT-5.1 Codex Max with Vercel's and no other provider accounts required.AI Gateway Using a process called compaction, GPT-5.1 Codex Max has been trained to operate across multiple context windows and on real-world software engineering tasks. GPT-5.1 Codex Max is faster and more token efficient compared to previous Codex models, optimized for long-running coding tasks, and can maintain context and reasoning over long periods without needing to sta

Cloudflare Fundamentals, Terraform - Terraform v5.14.0 now available

Earlier this year, we announced the launch of the new Terraform v5 Provider. We are aware of the high number of issues reported by the Cloudflare community related to the v5 release. We have committed to releasing improvements on a 2-3 week cadence to ensure its stability and reliability, including the v5.14 release. We have also pivoted from an issue-to-issue approach to a resource-per-resource approach - we will be focusing on specific resources to not only stabilize the resource but also ensu

WAF - Increased WAF payload limit for all plans

Cloudflare WAF now inspects request-payload size of up to 1 MB across all plans to enhance our detection capabilities for React RCE (CVE-2025-55182). Key Findings React payloads commonly have a default maximum size of 1 MB. Cloudflare WAF previously inspected up to 128 KB on Enterprise plans, with even lower limits on other plans. Update: We later reinstated the maximum request-payload size the Cloudflare WAF inspects. Refer to Updating the WAF maximum payload values for details.

WAF - Updating the WAF maximum payload values

We are reinstating the maximum request-payload size the Cloudflare WAF inspects, with WAF on Enterprise zones inspecting up to 128 KB. Key Findings On December 5, 2025, we initially attempted to increase the maximum WAF payload limit to 1 MB across all plans. However, an automatic rollout for all customers proved impractical because the increase led to a surge in false positives for existing managed rules. This issue was particularly notable within the Cloudflare Managed Ruleset and the Cloudfla

Introducing swift-huggingface: The Complete Swift Client for Hugging Face

Cloudflare Fundamentals, Terraform - Terraform v5.14.0 now available

Earlier this year, we announced the launch of the new Terraform v5 Provider. We are aware of the high number of issues reported by the Cloudflare community related to the v5 release. We have committed to releasing improvements on a 2-3 week cadence ↗ to ensure its stability and reliability, including the v5.14 release. We have also pivoted from an issue-to-issue approach to a resource-per-resource approach ↗ - we will be focusing on specific resources to not only stabilize the resource but also

Introducing OpenAI for Australia

OpenAI is launching OpenAI for Australia to build sovereign AI infrastructure, upskill more than 1.5 million workers, and accelerate innovation across the country’s growing AI ecosystem.

Hello Developer: December 2025

In this edition: Meet the 2025 App Store Award winners. Sign up for new design and Liquid Glass activities in the new year. Check out the latest additions to our ever-expanding video library. Meet the team behind the sticker-centric language-learning app CapWords. Browse new documentation and HIG updates. Read the full story