OpenAI’s rapid cadence in the GPT-6 family drives current trader sentiment for the next Sol (6.1+) release. After GPT-6 Astra launched September 3 and GPT-6 Sol and Luna followed on September 22 with 50% lower API pricing, half the error rate of GPT-5.6 Sol, and strong gains on agentic benchmarks like ARC-AGI-3 and OSWorld, markets price an imminent 6.1+ update highly likely by year-end. Intense competition from Anthropic’s simultaneous Claude Opus 5.5 release and lingering U.S. government safety reviews create the main swing factors, as OpenAI balances speed with regulatory clearance. Traders watch for official announcements on expanded availability or new capability thresholds that would trigger resolution.