{"slug": "arena-offers-free-72-hour-access-to-openais-chatgpt-images-2-5-sunburst", "title": "Arena offers free 72-hour access to OpenAI’s ChatGPT Images 2.5 Sunburst", "summary": "OpenAI released its ChatGPT Images 2.5 image generation model on September 8, and the precision-focused Sunburst variant reached the top spot on Arena's text-to-image, single-image edit, and multi-image edit leaderboards within hours, holding an estimated ELO score of approximately 1421 as of September 9. Arena is offering free 72-hour access to Sunburst, after which API pricing is $5 per million input tokens and $30 per million output image tokens. OpenAI's speed-focused Flare variant ranked just behind Sunburst, giving OpenAI the top two leaderboard positions.", "body_md": "FoxTPNL / Wikimedia Commons (CC BY 4.0)\n\n# Arena offers free 72-hour access to OpenAI’s ChatGPT Images 2.5 Sunburst\n\nOpenAI's newest image model claimed the top spot on every major Arena leaderboard within hours of launch, and anyone can try it for free right now\n\nOpenAI 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.\n\nTo 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.\n\n## What Sunburst actually does differently\n\nChatGPT 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.\n\nAs 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 its predecessor GPT-Image-2 and every other model currently on the platform.\n\nFlare positioned itself closely behind Sunburst in those same rankings, which means OpenAI effectively holds the top two spots on the leaderboard right now.\n\n## How Arena’s ranking system works\n\nArena.ai has become the de facto proving ground for AI image generation models. The platform works by showing users two outputs side by side, generated by different models from the same prompt, without revealing which model made which image. Users then vote on which they prefer.\n\n## Pricing and the competitive landscape\n\nOnce the free trial window closes, Sunburst’s API pricing lands at $5 per million input tokens and $30 per million output image tokens.\n\nThe improvements OpenAI highlights in this release, specifically lighting fidelity, prompt adherence, and subject preservation, address three of the most persistent complaints about AI image generation.\n\nMulti-turn editing fidelity is another notable upgrade. This refers to the model’s ability to maintain consistency across multiple rounds of edits to the same image.\n\n**Disclosure:** This article was edited by Editorial Team. For more information on how we create and review content, see our\n\n[Editorial Policy](https://cryptobriefing.com/editorial-policy/).", "url": "https://wpnews.pro/news/arena-offers-free-72-hour-access-to-openais-chatgpt-images-2-5-sunburst", "canonical_source": "https://cryptobriefing.com/arena-free-openai-sunburst-72-hours/", "published_at": "2026-09-10 15:07:09+00:00", "updated_at": "2026-09-10 15:18:14.273449+00:00", "lang": "en", "topics": ["generative-ai", "ai-products", "artificial-intelligence"], "entities": ["OpenAI", "ChatGPT Images 2.5", "Sunburst", "Arena", "Flare", "GPT-Image-2"], "alternates": {"html": "https://wpnews.pro/news/arena-offers-free-72-hour-access-to-openais-chatgpt-images-2-5-sunburst", "markdown": "https://wpnews.pro/news/arena-offers-free-72-hour-access-to-openais-chatgpt-images-2-5-sunburst.md", "text": "https://wpnews.pro/news/arena-offers-free-72-hour-access-to-openais-chatgpt-images-2-5-sunburst.txt", "jsonld": "https://wpnews.pro/news/arena-offers-free-72-hour-access-to-openais-chatgpt-images-2-5-sunburst.jsonld"}}