OpenAI is rapidly regaining market share against Anthropic—which currently leads 44% to 40% among tech-forward businesses—as developers favor GPT-5.6 Sol over Anthropic’s Fable 5 due to the latter's high pricing and a strict 30-day data retention policy. This volatility highlights that enterprise LLM spend is highly non-sticky, meaning your production pipelines must remain strictly model-agnostic to seamlessly swap providers as performance, compliance, and cost dynamics shift.