OpenAI Cuts GPT-6 Prices as Grok Trails Claude and GPT-6 #
OpenAI launched GPT-6 Sol and Luna at half the token price of their predecessors, taking aim at Anthropic's pricier offerings. OpenAI says the models are cut from the same cloth as Astra and make fewer mistakes, but independent analyses found little improvement in underlying intelligence.
Anthropic released Opus 5.5 with lower prices and Fable-level performance, calling it the strongest-performing model it has tested. xAI released Grok 4.7 at bargain prices, but the model scored 46 on the Artificial Analysis Intelligence Index, compared with 53 for both Claude Fable 5.1 and GPT-6.
The gap between Grok 4.7 and those models grows wider in agentic coding. The three releases put price and measured performance side by side: OpenAI and Anthropic are lowering prices, while independent testing shows limited intelligence gains for GPT-6 and a wider coding gap for Grok.
Why it matters: OpenAI's half-price GPT-6 models directly challenge Anthropic's pricier offerings, while xAI's bargain-priced Grok 4.7 scores 46 on the Artificial Analysis Intelligence Index—seven points behind Claude Fable 5.1 and GPT-6.
Key Takeaways
- Anthropic called Opus 5.5 the strongest-performing model it has tested.
- OpenAI says Sol and Luna are cut from the same cloth as Astra and make fewer mistakes.
- Grok 4.7 falls further behind Claude Fable 5.1 and GPT-6 in agentic coding than on the overall index.