OpenAI targets Anthropic with GPT-5.6
openai launched the gpt-5.6 family (sol, terra, luna), claiming it outperforms anthropic on the coding agent index while costing a third less.
openai unveiled the gpt-5.6 family comprising sol (workhorse), terra (intermediate), and luna (budget-friendly), emphasizing 54% greater token efficiency and new defensive cybersecurity capabilities like threat modeling. the company claims sol achieves a score of 80 on the coding agent index, surpassing anthropic's fable 5, while consuming less than half the tokens and costing one-third less. the launch targets enterprise workflows via the new chatgpt work tool and follows releases from meta and spacexai. this escalation signals a fierce race for efficiency and market share among top ai labs.