OpenAI Made GPT-5.6 Luna Free on August 6. The Tier Wars Escalated. Pay Attention to the Floor.
OpenAI made GPT-5.6 Luna the default free model on August 6, 2026, with unlimited text chats available as of the week of August 10. ChatGPT Go costs $8 per month and targets price-sensitive markets. A new $125-per-month premium seat appeared in ChatGPT Business on August 11 for users hitting agent workflow caps. Anthropic and Google both maintained near-weekly feature drops through the summer, making static comparisons obsolete.
This demonstrates competitive bracket compression. When the free tier gets yesterday's frontier model, the paid tiers must differentiate on workflow capacity, latency, or agent autonomy rather than raw intelligence. The mental model: the floor rising forces competitors to compete on integration and throughput, not on model quality alone. Raw model quality is becoming table stakes.
OpenAI, Anthropic, and Google are the three actors. OpenAI moved GPT-5.6 Luna to free and added a $125 Business tier. Anthropic upgraded features on July 23. Google's Gemini release log shows near-weekly drops.
- Open the free tier of ChatGPT, Gemini, and Claude in three browser tabs.
- Ask each the same moderately complex question, such as requesting a comparison of two topics with pros and cons.
- Time how long each takes to respond and note which gives the most useful structure. You have now experienced the compressed free-tier floor yourself. The differences will be smaller than you expect.