@sama: Also, 6.1 Sol was our fastest-growing model ever, and was a bit slow under load. Should be much better now!
Summary
Sam Altman notes that GPT 5.1 Sol was OpenAI's fastest-growing model ever and experienced some slowness under load, with performance improvements now rolled out.
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@sama: obviously the best model we have ever produced, but also one of the best blog posts we have ever produced:
OpenAI announces the GPT-5.6 family including Sol, Terra, and Luna, claiming state-of-the-art performance across coding, knowledge work, and science with higher efficiency and lower cost.
5.6 Sol is underhyped for general work (7 minute read)
OpenAI unveils GPT-5.6 Sol, a flagship model for long-running autonomous work across applications and enterprise data, featuring Ultra mode with sub-agents for faster, stronger results. The model was used internally to help train Luna and demonstrates significant cost and performance improvements over previous versions.
@sama: Good new first: Sol is a smart, efficient, and a significant step forward. It is the same price as GPT-5.5. Also launch…
OpenAI CEO Sam Altman announces new models Sol and Terra, with Sol matching GPT-5.5 at the same price and Terra offering 5.5-level performance at half the price, but launching in limited preview due to US government request.
GPT 5.6 Sol benchmarks
GPT 5.6 Sol achieves new benchmark results, showcasing performance improvements in AI language modeling.
@OpenAI: After deployment, we applied GPT-5.6 Sol to advance the frontier of efficiency by making itself more efficient to run. …
OpenAI deployed GPT-5.6 Sol, achieving 20% lower serving costs and 15%+ better token-generation efficiency through improved GPU kernels and speculative decoding.