How we'd choose between the brand-new OpenAI and Anthropic models

​ ​ ​ ​ ​ Today, both OpenAI and Anthropic released new, significantly improved models: GPT-5.3 Codex and Opus 4.6. We've been testing them thoroughly internally on real production use cases, and we've come to a conclusion: The models are converging. Opus 4.6 has all of the things we love about 4.5, but with the thorough, precise style that made Codex the go-to for hard-coding tasks. And Codex 5.3 is still a powerful workhorse, but it finally picked up some of Opus's warmth, speed, and willingness to just do things without asking permission. From this, we can only conclude that both labs are moving steadily toward a sort of Ur-coding model: one that's wicked smart, highly technical, and fast, creative, and pleasant to work with. Our top-line takeaways of how the two stack up against each other is available to anyone, with a full analysis available only for subscribers. Read the Vibe Check Here's what you'll find in the full Vibe Check: Our high-level take on what both of the models get right An analysis of which performs better for certain tasks, such as research and planning, long feature builds, and empathy and creativity The full Reach Test ratings (yes, the green/yellow/red scores) from Cora general manager Kieran Klaassen, Monologue general manager Naveen Naidu, staff writer and AI editorial lead Katie Parrott, lead engineer Andrey Galko, and CEO Dan Shipper A set of internal benchmarks we created to test the models on tasks of increasing difficulty Join us this afternoon for a livestream with Every's team about our takeaways from testing, available to anyone. In the meantime, from now until February 13, new paid subscribers get their first 30 days free. This is the perfect time to join: Access our upcoming camps, use our AI apps, and get ideas daily as we explore what's possible with AI. —The Every team You received this email because you signed up for emails from Every. No longer interested in receiving emails from us? Click here to unsubscribe. 123 Nevins St, #2, Brooklyn, NY 11217 https://0ab9ee3d.unsubscribe.convertkit-mail2.com/n4u5mlomm5avhxmgp29h6h6ww0wggalhvol2o