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On Thursday, OpenAI announced the release of a light-weight version of its agentic coding tool Codex, the latest model of which OpenAI launched<\/a> earlier this month. GPT-5.3-Codex-Spark is described by the company as a \u201csmaller version\u201d of that model, one that is designed for faster inference. To power that inference, OpenAI has brought in a dedicated chip from its hardware partner Cerebras, marking a new level of integration in the company\u2019s physical infrastructure.<\/p>\n The partnership<\/a> between Cerebras and OpenAI was announced last month, when OpenAI said that<\/a> it had\u00a0reached a multi-year agreement with the firm worth over $10 billion. \u201cIntegrating Cerebras into our mix of compute solutions is all about making our AI respond much faster,\u201d the company said at the time. Now, OpenAI calls Spark the \u201cfirst milestone\u201d in that relationship.<\/p>\n Spark, which OpenAI says is designed for swift, real-time collaboration and \u201crapid iteration,\u201d will be powered by Cerebras\u2019 Wafer Scale Engine 3. The WSE-3 is Cerebras\u2019 third-generation<\/a> waferscale megachip, decked out with 4 trillion transistors. OpenAI describes the new lightweight tool as a \u201cdaily productivity driver, helping users with rapid prototyping\u201d rather than the longer, heavier tasks that the original 5.3 is designed for. Spark is currently enjoying a research preview for ChatGPT Pro users in the Codex app.<\/p>\n In a tweet in advance of the announcement, CEO Sam Altman seemed to hint at the new model. \u201cWe have a special thing launching to Codex users on the Pro plan later today,\u201d Altman tweeted. \u201cIt sparks joy for me.\u201d<\/p>\n In its official statement, OpenAI emphasized Spark as designed for the lowest possible latency on Codex. \u201cCodex-Spark is the first step toward a Codex that works in two complementary modes:\u00a0real-time collaboration\u00a0when you want rapid iteration, and\u00a0long-running tasks\u00a0when you need deeper reasoning and execution,\u201d OpenAI shared. The company added that Cerebras\u2019 chips excel at assisting \u201cworkflows that demand extremely low latency.\u201d<\/p>\n Cerebras has been around for over a decade<\/a> but, in the AI era, it has enjoyed an increasingly prominent role in the tech industry. Just last week, the company announced that<\/a> it had raised $1 billion in fresh capital at a valuation of\u00a0$23 billion<\/a>. The company has previously announced<\/a> its intentions to pursue an IPO.<\/p>\n \u201cWhat excites us most about GPT-5.3-Codex-Spark is partnering with OpenAI and the developer community to discover what fast inference makes possible \u2014 new interaction patterns, new use cases, and a fundamentally different model experience,\u201d Sean Lie, CTO and Co-Founder of Cerebras, said in a statement. \u201cThis preview is just the beginning.\u201d<\/p>\n Techcrunch event<\/p>\n \n\t\t\t\t\t\t\t\t\tBoston, MA<\/span>
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