OpenAI Launches GPT-6 Sol and Luna With 50% API Price Cut Ahead of DevDay 2026

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OpenAI released two new models, GPT-6 Sol and GPT-6 Luna, on September 22, 2026, positioning them as cost-optimized alternatives to its frontier model GPT-6 Astra, which had launched earlier on September 3. Sol is priced at $2 per million input tokens while Luna costs just $0.10 per million, with cached input discounts reaching 90% off. Both models are available via ChatGPT Work, Codex, and the OpenAI API, and are designed to handle production-scale agentic workloads at significantly lower cost than competing models. OpenAI's DevDay 2026 is set to follow on September 29 at Fort Mason in San Francisco, where over a dozen new product announcements are expected. CEO Sam Altman teased the event with a cryptic four-word post, suggesting the focus will be on platform infrastructure rather than model capabilities alone.

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Developer builds 272 client-side browser tools that never upload your files

A developer built toolspace.cloud, a collection of 272 browser-based utilities spanning PDF, image, video, audio, and developer tools, all within five weeks. Every tool runs entirely in the user's browser using WebAssembly, meaning no files are ever sent to a server. The stack relies on technologies including ffmpeg.wasm, pdf-lib, Web Workers, and the Canvas API, all of which the developer notes have been production-ready for over a year. Heavy processing tasks run off the main thread via Web Workers, while a service worker caches WebAssembly binaries after the first load to speed up repeat visits. The project requires no signup, displays no ads, and was motivated by privacy concerns over conventional online tools that process files on remote servers.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

Developer builds 37,000-page multilingual Quran site using Next.js 15 static prerendering

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ProgrammingDEV Community ·

OGAD App Lets You Search Voice Notes Locally Without Cloud or Internet

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