gpt-6.1-sol was released 7 days after gpt-6-sol only because they were bleeding to fable-5.1/opus-5.5 from Anthropic. It was a desperation move and certainly ate into their margins massively. Since their margins on gpt-6.1-sol are much slimmer than on gpt-6-sol they have to use it somehow to preserve compute and make profit. Frankly I think OpenAI is a mess and is playing catch-up with Anthropic… I don’t know how they will recover.