OpenAI’s GPT-6 Sol and GPT-6 Luna can now be tested in Arena.ai’s Agent Arena, with scores still to come, and in Code Arena for WebDev, Text, Vision, Search, and Document. OpenAI says the models build on GPT-6 Astra and that their API prices are 50% lower than GPT-5.6 promotional pricing.
GPT-6 Sol and GPT-6 Luna build on advances behind GPT-6 Astra as faster, more affordable models for work at scale. OpenAI says more efficient caching and inference are reflected in API prices 50% lower than GPT-5.6 promotional pricing.
OpenAI Developers said on September 22, 2026, that both models were launching that day, with API prices 50% lower than GPT-5.6.
OpenAI says GPT-6 Sol and GPT-6 Luna build on advances behind GPT-6 Astra as faster, more affordable models for work at scale. More efficient caching and inference are reflected in API prices 50% lower than GPT-5.6 promotional pricing.
Tencent Hunyuan said Hy Image3.5 preview is live, with text-to-image and image-to-image generation up to 2K. Tencent Cloud API pricing is $0.024 per generated image, and it offered two weeks free only on OnSolo and Miora.
