Pi v0.99.1: adds GPT-6.1 Sol and makes it the default Codex model

Pi Changelog @PiChangelogOriginally posted 2026.09.30

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Pi v0.99.1 is out! Highlights: - GPT-6.1 Sol (gpt-6.1-sol) is now available on OpenAI, Azure OpenAI Responses, and OpenAI Codex providers. - GPT-6.1 Sol is now the default OpenAI Codex model. - Fixed /login with OpenAI failing in the bundled release due to a missing openai-chatgpt.js module error. Complete details in thread ↓