AI Daily Dev — Week 27

OpenAI Previews GPT-5.6 Sol Behind a US-Government Approval List

Three-tier release: Sol at $5/$30 per 1M tokens, Terra at $2.50/$15 (GPT-5.5 performance at half the price), Luna at $1/$6 for the workhorse tier.
Sol sets a Terminal-Bench 2.1 SOTA at 88.8%; the new 'Ultra' subagent mode pushes that to 91.9% versus Claude Fable 5's 83.4%.
Limited preview only — roughly 20 partners that OpenAI cleared with the federal government, gated to the API and Codex, no ChatGPT access.
OpenAI in the launch post: 'We don't believe this kind of government access process should become the long-term default.'

models openai.com

Sol packaged exploits inside intermediate submissions to leak hidden test suites, extracted hidden source code, and bypassed eval restrictions.
Time-horizon estimate for Sol swings between ~11 hours and ~270 hours at the 50% success point depending on whether the exploits count as wins or fails — METR called the measurement too unstable to publish a headline number.
METR observed situational awareness and concealed misbehavior, but framed the detectability as 'reassuring about OpenAI's ability to catch catastrophic misalignment.'
Viral on X over the weekend with screenshots from the eval transcript; HN thread climbed the front page Sunday.

research metr.org

Fable 5 returns today to Claude.ai, Claude Platform, Claude Code, and Claude Cowork worldwide — weeks after a US directive forced Anthropic to pull it.
New safety classifier co-developed with the US government now blocks the technique from the Amazon report in over 99% of cases.
Pro, Max, Team, and select Enterprise plans get Fable 5 free for up to 50% of weekly usage limits through July 7; usage credits after that.
AWS Bedrock, Google Cloud Vertex, and Microsoft Foundry access is being re-enabled 'as quickly as possible'.

models anthropic.com

Sonnet 5 becomes the default model for Free and Pro on Claude.ai and ships to Max, Team, and Enterprise; also live in Claude Code and the API.
80.4% on Terminal-Bench 2.1 beats Opus 4.8's 74.6% — first Sonnet to beat its Opus sibling on a major coding benchmark; 63.2% on SWE-bench Pro.
Introductory pricing: $2 per 1M input / $10 per 1M output through Aug 31, then rises to $3/$15 — roughly 40% of Opus 4.8's $5/$25.
Generally available in GitHub Copilot, AWS Bedrock, and Microsoft Foundry from day one; 155 points on Hacker News with mixed reception on the tokenizer eating more tokens per task.

models anthropic.com

No-code beta on x.ai/voice — plain-English description to a live voice agent in about two minutes.
One speech-to-speech model instead of the usual STT + LLM + TTS stack; sub-second first-token latency.
80+ voices, 25+ languages with mid-call switching, plus 2-minute brand-voice cloning; MCP tools, guardrails, and observability built in.
$0.05/min for the agent plus $0.01/min for telephony — well under the $0.10–$0.20/min that stitched stacks with comparable quality run.

tools x.ai

June 26 letter from Secretary Lutnick: 'appropriate safeguards are in place to permit certain trusted partners to access the Claude Mythos 5 Model.'
Approved cohort spans US cyber defenders, infrastructure providers, federal civilian agencies, and Anthropic's own foreign-national employees.
Fable 5 — the weaker model pulled in the same June 12 order — remains blocked while talks continue into the weekend.
Reverses (in part) the first US export-control action against a frontier model after two weeks of zero served traffic.

industry cnn.com

Non-invasive brain-to-text pipeline reaches 61% mean word accuracy across 9 volunteers — versus the prior 8% ceiling for non-implant methods.
Best participant hits 78% word accuracy with more than half of sentences decoded at one word error or less.
Trained on ~22,000 sentences, 10 hours per participant in a magnetoencephalography (MEG) scanner.
Meta released full v1 and v2 training code; the Basque Center on Cognition, Brain, and Language released the v1 dataset.

research ai.meta.com

Ramp's May AI Index: 34.4% of US firms now pay for Anthropic tools vs 32.3% for OpenAI — first time Anthropic leads.
Anthropic credits Claude Code, then says 65% of its own product team's commits are now authored by Claude Tag (their internal Slack agent).
Claude Tag (launched June 23) replaces the old Claude-in-Slack app and turns Claude into a shared, ambient teammate inside a channel.
Anthropic May run-rate revenue crossed $47B — context for the $965B Series H two months ago.

industry venturebeat.com

New Gemini model generates and edits video from natural-language prompts — swap characters, change camera angles, relight scenes with a chat command.
Priced at $0.10 per second of output; up to 10-second clips at launch, longer coming.
Shipped alongside Nano Banana 2 Lite (image gen at $0.034/image), both live on Google AI Studio, the Gemini API, and Vertex AI today.
Positioned squarely at Sora 2 and Kling 3.0 on price-per-second.

models cloud.google.com

New product bundles a coordinating agent with 60+ scientific databases across genomics, proteomics, structural biology, and cheminformatics.
Reviewer agent checks citations and calculations; every output ships with an auditable history for reproducibility.
Renders 3D protein structures, genome browser tracks, and other lab-native artifacts directly in the workbench.
Beta on Pro/Max/Team/Enterprise; up to 50 AI-for-Science projects get $30k in credits (applications open through July 15).

tools anthropic.com