Arena offers free 72-hour access to OpenAI’s ChatGPT Images 2.5 Sunburst

OpenAI dropped its latest image generation model, ChatGPT Images 2.5, on September 8, and it didn’t take long for the results to speak for themselves. The Sunburst variant, built for high-precision output, climbed to the number one ranking across Arena’s text-to-image, single-image edit, and multi-image edit leaderboards within hours of going live. To celebrate (or stress-test, depending on your cynicism level), Arena is giving everyone free access to Sunburst for 72 hours. No credit card, no waitlist, just open the platform and start generating. What Sunburst actually does differently ChatGPT Images 2.5 ships with two API variants. Sunburst is the precision-focused model, optimized for lighting fidelity, prompt adherence, and subject preservation. Flare is the speed demon, delivering up to 50% lower latency compared to previous models. As of September 9, Sunburst held an estimated ELO score of approximately 1421 on Arena’s text-to-image leaderboard. For context, Arena uses a competitive ranking system similar to chess ratings, where models are pitted against each other in blind matchups and users vote on which output looks better. An ELO of 1421 puts Sunburst meaningfully ahead of...