Simon Willison’s Weblog·22 hours ago·
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The Gemini API and a $100/month subscription plan added support for the Gemini 4 Argon model via llm-gemini 0.35. The article says Argon costs $2/million input and $10/million output at launch, doubling on December 1st. Token-based benchmarking and overall running cost comparisons are expected to matter more as the price changes.
RoleFit launched today to generate tailored job application documents instead of requiring users to start from scratch. It uses Gemini AI and can export personalized resumes, cover letters, and LinkedIn outreach, plus PDFs and DOCX files. The change is that job seekers can analyze job descriptions and revise ATS-friendly materials and track applications in one place.
Google is rolling out Gemini 4 Argon more broadly and expanding its Fairwind Program for trusted cyber defenders after testing limited access for misuse and misalignment risks.
Gemini 4 Argon was released as a physical-reasoning model for robotics, covering code generation and visual-semantic reasoning across control, real-to-sim, and research/self-improvement workflows. On the Embodied Reasoning (ERQA) benchmark, Argon scored 87% using pure reasoning, higher than other frontier models. This shifts robotics development toward applying a single general-purpose physical reasoning model across the full robotics lifecycle, including real-to-sim calibrated simulation and closed-loop robot control.
Google released Gemini 4 Argon for developers and enterprises via the API and Google’s apps/platforms. The introductory pricing is $2 per million input tokens and $10 per million output tokens. The availability expands to more users and partnerships, and teams across engineering, cybersecurity, and science describe faster results using the new model.
Google is rolling out Gemini 4 Argon more widely in the Gemini app and its Antigravity feature, but access starts with paying users only. The rollout begins today. Capabilities and published benchmarks remain the same, while access is tier-limited and processing is guarded by a refusal system and an automated misalignment monitor.
Google debuted Gemini 4 Argon, making its new flagship model available in the Gemini API (paid tier) and across Google’s developer and consumer tools, with an initial rollout limited to selected Fairwind partners and testers. The model includes a unified 1M token limit that combines input and output in the same budget, and it costs $2 per million input tokens and $10 per million output tokens through November 30. After this shared limit, long prompts reduce the remaining tokens available for responses, and Google’s later description shifts from an output cap to a single input/output budget.
Google launched Gemini 4 Argon as its frontier model for long-horizon software engineering, enterprise knowledge work, and cybersecurity defense. As of Oct 13, it is available globally in the Gemini API paid tier, AI Studio, the Gemini app, and AI Mode in Search with a 1M unified input and output token limit. It moves the model into multiple Google products and paid developer access with a specified token cap for longer tasks.
AURORA Lifeline launched to convert an official IMD cyclone bulletin into a district plan that maps which PHCs, hospitals, and villages will lose road access and what to move first. Gemini reads the bulletin and runs 1,000+ WeatherNext and ECMWF storm futures over each road to populate the plan’s numbers. Officers then approve the results and the tool is described as open source, with published code missing.
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