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- Elon Musk Launches Grok 4 š!
Elon Musk Launches Grok 4 š!
Also: Perplexity takes on Chrome with its new AI-driven browser, Comet, while OpenAIās open model is on the horizon š.

Source: ChatGPT Image Generator
Weāve seen Grokās āantisemitic meltdownā all over socials this week, but what we definitely didnāt expect was a product launch in the midst of all this. All publicity is good publicity? The folks at xAI probably think so š .
Forward thinkers, today, we bring you issue #115 of the Neural Frontier.
Weāre diving into Grok 4ās launch, as well as groundbreaking updates from tech giants Perplexity and OpenAI. Youāre gonna love this one š.
In a rush? Here's your quick byte:
š Elon Musk launches Grok 4!
āļø Perplexity takes on Chrome with its new AI-driven browser, Comet.
š¤ OpenAIās open model is on the horizon!
š AI Reimagines: Iconic logos as Da Vinci sketches!
šÆ Everything else you missed this week.
ā” The Neural Frontierās weekly spotlight: 3 AI tools making the rounds this week.

Source: xAI
Elon Musk's AI venture, xAI, has officially unveiled Grok 4, its newest flagship AI model, alongside a high-priced subscription tier called SuperGrok Heavy at $300 per month.
Hereās what you need to know:
šÆ Whatās New with Grok 4? Grok 4 is xAIās ambitious challenger to models like OpenAIās ChatGPT and Googleās Gemini, featuring advanced capabilities including:
Image analysis and interpretation
High-level problem-solving through multi-agent collaboration
Superior academic performance, reportedly better than PhD-level knowledge in all subjects
Elon Musk, appearing in his trademark style during the livestream launch, boldly stated:
āWith respect to academic questions, Grok 4 is better than PhD level in every subject, no exceptions⦠It might lack common sense at times, but itās just a matter of time before it discovers new physics.ā
š§ Grok 4 Heavy: Multi-Agent Enhanced Version: Grok 4 launched in two variants:
Grok 4: A standard but powerful conversational AI model.
Grok 4 Heavy: A multi-agent model that uses multiple AI agents simultaneously to solve problems collaboratively, significantly boosting performance.
Notable benchmark results for Grok 4:
Test | Grok 4 | Grok 4 Heavy | Competitors |
Humanityās Last Exam | 25.4% (no tools) | 44.4% (with tools) | Gemini 2.5 Pro: 26.9%, OpenAIās o3: 21% |
ARC-AGI-2 (Visual pattern recognition) | 16.2% | ā | Claude Opus 4: ~8% |
š° SuperGrok Heavy: The new $300/month subscription tier, SuperGrok Heavy, offers subscribers:
Early access to Grok 4 Heavy
Priority access to advanced frontier AI models
Early previews of upcoming products, including:
AI coding model (August 2025)
Multi-modal agent (September 2025)
Video generation model (October 2025)
This makes it the most expensive subscription in the AI market, ahead of similar ultra-premium tiers from OpenAI, Google, and Anthropic.
ā ļø Recent Controversies Surrounding Grok: The Grok 4 launch was overshadowed by recent issues involving the AI's problematic outputs:
Grok made widely criticized antisemitic posts, including praise for Hitler, prompting xAI to briefly disable its automated posts on X (formerly Twitter).
xAI swiftly removed parts of Grokās system instructions that had encouraged "politically incorrect" responses.
During the livestream, Musk and the team mostly avoided addressing these controversies directly, instead emphasizing Grokās capabilities.
š ļø Future Integration and Developer Support: Grok 4 is now accessible via xAIās API, encouraging developers to create applications using Grokās advanced capabilities. Additionally, xAIās enterprise division, just two months old, plans to partner with cloud hyperscalers to expand Grokās availability to businesses.
Musk expressed high ambitions for Grokās future potential:
āI would expect Grok to discover new technologies that are actually useful no later than next year, and maybe by the end of this year. It might discover new physics next year⦠let that sink in.ā
The model's potential integration into Muskās vision of humanoid robots was also hinted at, reinforcing Grokās central role in Muskās broader AI ambitions.

Source: Perplexity
Perplexity, known for its popular AI-driven search engine, has officially unveiled its own web browser named Comet, aiming directly at Googleās dominance in the browsing space.
Here's the 411:
š Introducing Comet: A Next-Gen Browser
Perplexity CEO Aravind Srinivas describes Comet as transforming āentire browsing sessions into single, seamless interactions.ā Built on Google's Chromium engine, Comet integrates Perplexityās AI search and assistance tools into a familiar, user-friendly browser experience.
Availability:
Initially exclusive to subscribers of the premium $200/month Perplexity Max plan.
Later rolling out on an invite-only basis.
š§ Core AI Features: Cometās standout functionalities are powered by its AI integrations:
AI-Powered Search Engine: Uses Perplexityās search engine by default, providing AI-generated answers based on web content, directly competing with Google Search.
Comet Assistant: Embedded within Cometās sidebar, it sees your current web page to answer questions and provide summaries without leaving the browser tab.
Capable of performing "agentic" tasks, including booking hotels and purchasing products, managing calendar events and emails, and summarizing complex documents and web pages.
šÆ Strategic Significance: Comet marks Perplexityās boldest step in its ongoing rivalry with Google. Srinivas has emphasized that becoming usersā default browser could lead to āinfinite retentionā and dramatically boost Perplexityās market position.
Recent partnerships, like pre-installing Perplexity on Motorolaās Razr smartphones, showcase the companyās determination to chip away at Googleās dominance in AI search and browsing.

Source: Freepik
OpenAI is preparing a major shift, planning to release its first open-weight language model since GPT-2 in 2019āa move likely to shake up its already complex relationship with partner Microsoft.
Hereās whatās going down:
šÆ Whatās Happening? OpenAI will soon launch a new open-weight AI language model, marking its first open model since GPT-2.
Unlike typical models (e.g., GPT-3, GPT-4), whose training parameters (weights) are kept private, this model will make its weights publicly available, allowing third-party organizations and governments to deploy the model independently.
š§ Details on the Model: Internally described as āsimilar to o3 mini,ā the model promises strong reasoning capabilities, akin to OpenAIās latest flagship models. OpenAI has already been demonstrating the model privately to developers and researchers, actively soliciting feedback.
Itās likely launching next week and will be accessible via major platforms including:
Microsoft Azure
Hugging Face
Other leading cloud providers
āļø Significance of an Open-Weight Model
Enhanced flexibility: Governments and companies can independently host and customize the model.
Increased competition: OpenAIās move closely mirrors DeepSeekās R1 model, which rapidly gained traction earlier this year due to its open availability.
Shift in strategy: A departure from OpenAIās exclusive cloud hosting deal with Microsoft (signed in 2023).
š„ Implications for Microsoft & OpenAIās Relationship: The release may strain the exclusive partnership agreement with Microsoft, especially amidst ongoing negotiations to restructure OpenAI into a for-profit entity. Microsoft previously enjoyed unique benefits from OpenAIās exclusivity, benefits potentially diminished by widespread access to an open model.

Source: u/onion_man_4ever via Reddit
This weekās showcase is a compilation of some of the most iconic logos weāve seen over the years. But this time, thereās a Da Vinci-esque twist thrown into the mix.
šÆ Everything else you missed this week.

Source: OpenAI
āļø Replit partners with Microsoft.
ā” The Neural Frontierās weekly spotlight: 3 AI tools making the rounds this week.
1. šø Pokecut: Pokecut is a comprehensive AI-powered photo editing platform designed for users who need professional-quality image editing without technical expertise.
2. ā”n8n: n8n is an open-source workflow automation platform designed for technical teams who need flexible AI integration and custom automation solutions.
3. š¬ Short AI: Short AI is a comprehensive video creation platform designed for content creators who want to produce faceless videos and short-form content at scale.
Wrapping upā¦
Grok 4 lands in the middle of a storm, Comet challenges Chrome, and an open-weight model from OpenAI is almost here. Which one are you itching to try first?
If you found this useful, share it with a friend and subscribe so you donāt miss whatās next.
Weāll see you on the Neural Frontier next week! š