By: Siddharth Jindal
Article Complete SpaceXAI Launches Grok 4.6 to Take On GPT-5.6 and Fable 5 SpaceXAI Launches Grok 4.6 to Take On GPT-5.6 and Fable 5 The company says the model can handle multi-step research, coding and app-building tasks while checking and refining its own work along the way. AUGUST 13, 2026, 11:18 AM 5 min Grok 4.6 is available through Cursor, Grok Build and xAI's API, as well as platforms including OpenRouter, Vercel and Cloudflare. Pricing starts at $2 per million input tokens and $6 per million output tokens. A faster variant is priced at twice those rates. “Grok 4.6 builds on Grok 4.5 with a particular focus on long-running agents and more ambitious interactive and visual work,” SpaceXAI said in its announcement. The company said the model can sustain tasks across multiple steps, including researching topics, analysing information, working across codebases and building applications. On the Artificial Analysis Intelligence Index, Grok 4.6 scored 61, matching GPT-5.6 Sol and trailing Fable 5's score of 62. The index combines results from nine benchmarks. Grok 4.6 also scored 69.9% on CursorBench v3.2, compared with 67.2% for GPT-5.6 Sol and 70.5% for Fable 5. On DeepSWE v1.1, it scored 65.9%, while GPT-5.6 Sol scored 73% and Fable 5 scored 70%. The model performed better than Grok 4.5 across the benchmarks published by xAI. Its score on DeepSWE increased to 65.9% from 54%, while its CursorBench score rose from 66.7% to 69.9%. SpaceXAI said Grok 4.6 underwent a longer supplemental training run than Grok 4.5 using model-generated data covering reasoning and technical concepts, engineering data, and an updated training recipe. The company also used Grok 4.5 to generate supervised fine-tuning trajectories across different reasoning efforts, agent environments and areas including STEM, software engineering and knowledge work. Grok 4.6 was then trained with reinforcement learning on tasks covering coding and knowledge work, along with environments for kernel optimisation, web development and computer-aided design. SpaceXAI said the model is particularly suited to turning broad product ideas into working applications. It can research unfamiliar areas, structure an application, implement interactions and refine the output through multiple rounds of feedback. “On longer trajectories, we also started to see more self-testing and verification, with the model checking its own work before moving on,” the company added. The model is also being positioned for visual and interactive development. xAI said Grok 4.6 can establish the structure and visual language of an application in a single pass before iterating on the result. The release comes as AI companies increasingly position their models as agents capable of completing multi-step software and knowledge-work tasks rather than responding to individual prompts. SpaceX CEO Elon Musk also said that the company is planning to launch Grok 4.7 soon. “Grok 4.7 is significantly better than 4.6 and should be ready in three to four weeks. Initial training is complete, and now we're adding a massive amount of SpaceX company data in supplemental training. This will be something special,” he wrote in a post on X. Your reaction Discussion What's your take on this story? Start with a thought Our Coverage of AI News • The platform will help officials research policies, draft replies, translate documents and process records while... Read more → • The company says its platform now powers more than 60 million projects and receives over 900 million monthly visits,... Read more → • The company has launched a dedicated private equity business unit as PE firms increasingly look to technology and AI to... Read more → • According to the report by Speciale Invest and Startup Policy Forum, it took only seven rounds to raise $61.9 million... Read more → • N Chandrasekaran will step down as Tata Sons chairman in February 2027, ending months of uncertainty over his... Read more → About the Author Siddharth Jindal Tech Journalist Followed by 25 readers Siddharth is a media graduate who loves to explore tech through journalism and putting forward ideas worth pondering about in the era of artificial intelligence. Got a tip? Share confidential information with AIM. Wake up informed Make sense of the day's AI news and breakthroughs with our morning briefing. Industry intelligence Receive a roundup of AI adoption stories by industry vertical, curated for professionals. By signing up, you agree to our Privacy Policy CodeRabbit Raises $143 Mn as AI Coding Agents Generate More Code The company is expanding beyond AI code reviews with tools that prioritise changes, explain large pull requests and monitor software for security risks. AUGUST 13, 2026, 11:07 AM 5 min The round was co-led by Atomico and Smash Capital, with participation from BMW i Ventures, Datadog, Hirtle Callaghan, SineWave Ventures and existing investors including CRV, Scale Venture Partners and Engineering Capital. CodeRabbit said it will use the funding for international expansion, research, infrastructure and product development. The company also plans to invest more than $10 million over the next 12 months to keep its AI code review and agent capabilities free for open-source projects and maintainers. The funding comes as coding agents generate more code and pull requests, creating a new problem for engineering teams: deciding which changes need human attention and whether AI-generated changes are safe to ship. “The new bottleneck is judgement,” CodeRabbit said in its announcement. Alongside the funding, CodeRabbit has introduced a product category called Agentic Change Management. It extends the company's AI code review system into a platform for validating, prioritising, explaining and monitoring software changes created by both humans and AI agents. The platform includes three new capabilities: CodeRabbit Triage, CodeRabbit Change Stack and CodeRabbit Security. Triage scores incoming pull requests based on factors such as value, urgency, risk, dependencies and readiness. It can route higher-risk changes to human reviewers while moving lower-risk changes into automated workflows. Change Stack is designed to help developers understand large AI-generated pull requests without requiring a line-by-line review. It organises changes into semantic layers and shows their purpose, dependencies, affected systems and risks. CodeRabbit Security extends the company's code analysis to software already running in production. It examines relationships across files, services, data flows, authorisation boundaries and trust boundaries to identify security and business-logic risks. “A diff shows what changed. Change Stack shows what it means,” the company said. CodeRabbit argues that AI coding agents are reversing the traditional software development sequence. Instead of teams deciding what to build before investing significant engineering time, agents can turn product requirements, support tickets and security findings into code changes and pull requests. The company cited data showing that GitHub is on pace for 14 times more commits this year, while autonomous agents account for 35% of pull requests among companies in the 90th percentile of coding-agent adoption. That is shifting the pull request from a record of completed engineering work into a place where teams decide whether AI-generated work should be shipped. “The PR is set to become the auditable planning and decision point where the team determines what to ship,” CodeRabbit said. CodeRabbit's expansion comes as the market for AI coding tools grows. The company now conducts more than two million code reviews a week and has more than 17,000 customers, including NVIDIA, BMW, JFrog, Trivago, Adyen and Indeed. The company said its revenue grew more than fivefold over the past year. It also said its platform is used across more than 1,50,000 open-source projects. CodeRabbit previously raised a $60 million Series B round in September last year. The company has also expanded beyond pull-request reviews. In April, it launched CodeRabbit Agent for Slack, extending its code context engine into team conversations and the wider software development lifecycle. At the time, CodeRabbit said it served more than 15,000 teams and ran more than two million code reviews each week. The company now plans to expand further into Europe and Asia, including Japan. Atomico partner Luca Eisenstecken is also joining CodeRabbit's board. CodeRabbit's broader pitch is that AI can increase the amount of software produced, but human oversight still needs to keep pace. “People remain responsible for intent, architecture, product judgement, acceptable risk, and the consequences of what ultimately ships,” the company said. Your reaction Discussion What's your take on this story? Start with a thought About the Author Siddharth Jindal Tech Journalist Followed by 25 readers Siddharth is a media graduate who loves to explore tech through journalism and putting forward ideas worth pondering about in the era of artificial intelligence. Got a tip? Share confidential information with AIM. Subscribe to notifications










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