🚨 SCOOP: OpenAI are in the final stages of preparations for the launch of GPT-6 Sol and Luna, and the Terra tier is being discontinued. Anthropic are also working on a version bump with Fable, Opus, and Sonnet 5.5. Opus 5.5 is shipping imminently at discounted pricing, and Haiku looks to be going the same way as Terra. Whether they launch new Opus alongside other 5.5 models, we'll see. This is all alongside an ongoing RL run at OpenAI on Astra for 6.1. There's still active debate among people at OpenAI on whether to release "Bel" - a nickname for their next, larger new pretrain post-"Doug" (the nickname of the Astra pretrain) - and my interpretation is that they're only going to do so once their hand is forced, both because of safety concerns and a lack of capacity. They're confident enough in 6.1 that they believe it'll trade blows with Anthropic's Fable 5.5, which itself is based on Anthropic's first new Fable pretrain. As for 6 Sol and Luna, I don't think 6 Sol is going to hold up very well to the new Opus, but Sonnet 5.5 and Luna should be more competitive. Personally I don't think we'll see the new pretrain deployed publicly until late this year at the earliest. Given OpenAI are the kings of RL, I'm sure 6.1 will hold its own against Fable 5.5. But they're also up against the kings of pretraining! As for Chinese labs, keep an eye on Moonshot/Kimi this week 👀 xAI too, though I think Grok 4.7 is kinda cooked.