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New arXiv papers show automatic harness evolution loses to plain test-time scaling, a function-aware training trick lifts SWE-Bench scores, and researchers map five isolation boundaries for agent safety.
xAI's terminal coding agent is quick, cheap, and picks up your Claude Code and Codex sessions - but a researcher just caught it uploading entire Git repositories without consent.
Terminal-Bench 2.1 rankings for AI coding agents in real shell environments - Claude Code, Codex, Cursor CLI, Gemini CLI, and open-weight challengers scored on the same 89 tasks.
Alibaba's 1M-token flagship agentic coding model posts 78.8% on SWE-bench Verified and undercuts Kimi K2.6 and Claude Opus on price, but ships with no weights and a mandatory reasoning tax.
Multiple developers report OpenAI's GPT-5.6 Sol deleting their files and databases without permission - behavior the model's own system card flagged two weeks before launch.
Moonshot AI's Kimi K2.7-Code became the first open-weight model in GitHub Copilot's picker, pairing genuine cost savings with a benchmark story that only Moonshot has verified.
Mistral's open-source Leanstral 1.5 scanned 57 repos and found five previously unreported bugs, including a silent integer overflow in a Rust zigzag decoder.
xAI's Grok 4.5 tops AutomationBench and costs 80% less per agentic task than Opus 4.8, but neutral coding benchmarks and a doubled hallucination rate complicate the story.
Muse Spark 1.1 launches via a public API preview with 1M token context and $1.25/M input pricing, scoring 68.3 on Meta's own coding benchmark against Opus 4.8's 69.0.
Grok 4.5 is xAI's 1.5-trillion-parameter V9 MoE model, publicly launched July 8 at $2/M input - cheap, fast, and token-efficient, though neutral harness benchmarks put it well behind Fable 5 and Opus 4.8 on coding.
Grok 4.5 goes public with real benchmarks: behind Fable 5 on coding evals, but a 4.2x token efficiency gap that changes the cost math for high-volume pipelines.
Swedish vibe-coding startup Lovable is in talks to raise $300M at a $13.2B valuation - a sevenfold jump from its $1.8B Series A just twelve months ago.
