Superintelligence, give or take. The daily AI briefing: what the AI world actually said, sorted by how much it matters.

Thursday, September 10, 2026

Coverage: 94 videos reviewed (0 partial or status unknown); videos under 45 s were not reviewed. Dates are UTC upload dates. Vendor claims are labelled as such.

New today

GitHub and Microsoft Research report Hydra Fusion model routing cuts cost 36-67% versus Opus 5
GitHub said its Hydra Fusion research preview routes tasks to a single model, a cheap-then-escalate cascade or a draft-and-critique pair, and is an experimental option in the Copilot CLI. Microsoft Research's Ashna Garg reported, from vendor-run offline evals, 67% lower cost than Opus 5 on Terminal Bench 2.1, similar quality at 36% lower cost on DeepSWE and similar quality at 65% lower cost on an internal checkpoint benchmark. A four-task live demo came in 42% below Opus 5 and 47% below Fable 5.1 on cost, per the presenter. No run counts or raw scores were shown.

OpenAI launches Agents API with hosted Codex harness, MCP tools and multi-agent delegation
OpenAI's video presented an Agents API that runs a hosted Codex harness with sessions, orchestration and context management, tools via MCP, runbooks as skills and bring-your-own sandbox. It also lists programmatic tool calling, multi-agent delegation and compaction. Pricing, limits and availability were not stated, and token savings were not quantified.

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Models & learning