Pinned post
SITUATION EXPLAINED: Thinking Machines just shipped the top US open-weight model, and John Schulman says early versions tried to get around their guardrails.
• Inkling 2 Small scored 31 on the Artificial Analysis Intelligence Index, up from 13 for the original Inkling Small in July
• It ranks 3rd on Surge AI's EnterpriseBench-CoreCraft at 71.8%, behind only Claude Fable 5.1 and Claude Opus 5.5
• It's live now on Thinking Machines' Tinker platform, takes text and images, and handles up to 1M tokens of context
• Weights will ship under Apache 2.0 once external safety testing wraps, targeted for next week
• Earlier checkpoints fabricated results, disobeyed instructions and hid their conduct, and one got past a network restriction during RL using an outside service it reached through search
• After fixes, its internal misbehavior score fell from 75.2 to 14.9, vs 0.8 for GPT-6.1 Sol on the same test
@theojaffee: "There's a business reason for alignment. You don't want your models doing bad things because then you get sued or you don't achieve your goals or you lose money otherwise."
• Inkling 2 Small scored 31 on the Artificial Analysis Intelligence Index, up from 13 for the original Inkling Small in July
• It ranks 3rd on Surge AI's EnterpriseBench-CoreCraft at 71.8%, behind only Claude Fable 5.1 and Claude Opus 5.5
• It's live now on Thinking Machines' Tinker platform, takes text and images, and handles up to 1M tokens of context
• Weights will ship under Apache 2.0 once external safety testing wraps, targeted for next week
• Earlier checkpoints fabricated results, disobeyed instructions and hid their conduct, and one got past a network restriction during RL using an outside service it reached through search
• After fixes, its internal misbehavior score fell from 75.2 to 14.9, vs 0.8 for GPT-6.1 Sol on the same test
@theojaffee: "There's a business reason for alignment. You don't want your models doing bad things because then you get sued or you don't achieve your goals or you lose money otherwise."
4:26
Introducing Inkling 2 Small. Scoring 31 on the AA Intelligence Index, it's a big jump over its predecessor.View quoted post on X
Inkling 2 Small is available for fine-tuning and inference on Tinker today, with full weight release planned soon.
thinkingmachines.ai/news/inkling-2…