Sonnet 5.5 reportedly in stealth testing as a direct answer to GPT-6 Sol

Chubby♨️ @kimmonismusOriginally posted 2026.09.24

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Here we go: Sonnet 5.5 already being stealth tested. The model has a 1M-token context window and a 128K-token maximum output. Pricing per 1M tokens: $2 input, $10 output. This reads to me as a direct response to GPT-6-Sol. Same pricing and presumably similar performance (if not better). The battle continues!

This post quotes another post: x.com/lyraxana/status/2102926787038548314