OpenAI’s GPT-6.1 is now available in Arena.ai’s Agent Arena and Code Arena

Arena.ai says OpenAI’s GPT-6.1 is now available in Agent Arena. Tester votes will shape its evaluation, and scores are coming soon.

Agent Arena measures models on millions of real-world, long-horizon agentic tasks. Models can use web search, a filesystem, and a terminal, and the leaderboard compares outcomes with the average model using causal tracing. GPT-6.1 is also available in Code Arena for WebDev, Text, Vision, Search, and Document.

OpenAI says GPT-6.1 Sol offers near-Astra intelligence for a fifth of the price and calls it the most cost-efficient model for its performance available today.