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Sol, Terra, and Luna, our GPT‑5.6 family of models, are starting to roll out now in ChatGPT, Codex, and the API.

A quick tour of the new ChatGPT Work.

The upcoming wave of SpaceXAI Grok updates is insane Grok 4.5: The 1.5T foundation model is being refined almost daily, and its context window is expected to jump to 1M tokens, possibly as soon as next week Next model: The 2T foundation model is expected to finish training this month and become available to customers next month Grok Build: The harness is getting refinements almost every day based on user feedback. New features, fixes, and workflow improvements are landing at ridiculous speed Inference: SpaceXAI is working on internally developed C/C++ inference mapped directly to GB300 hardware, which could double speed or more Agentic Imagine: Grok will be able to call Imagine as a tool in agentic mode for image and video generation That is going to be huge for game developers, designers, builders, and anyone creating interactive worlds But the biggest thing is this: Grok is being built for real-world engineering Grok 4.5 early beta access was given to Tesla and SpaceX engineers, with feedback coming from real engineering teams solving real-world problems Next month’s release is expected to be another massive step-change improvement as SpaceXAI closes the loop on real-world engineering problems at Tesla, SpaceX, Neuralink, and Boring Company And from now through the end of 2026, Elon said a new from-scratch foundation model is expected to ship every month

Introducing ChatGPT Work, a new agent in ChatGPT powered by Codex and GPT-5.6. It can take action across your apps and files, stay with a project for hours if needed, and turn a goal into finished work. It’s a whole new way to get work done.

New today: - GPT 5.6 Sol, Terra, and Luna - ChatGPT Work - The new ChatGPT desktop app - Unified plugins across ChatGPT & Codex - Sites (Beta) in ChatGPT - Multi-tab and enterprise auth in the Browser - Faster Computer use - and much more Today’s release is very special to the team and me. Let’s walk through it:

Every token should go further. With discounted tokens across leading AI models, OpenSand helps developers and enterprises build more while spending less. Lower costs. More possibilities. 🪩 opensand.ai #AIInfrastructure #OpenSand #LLM

Introducing a new way to reflect on how you use Claude. Your monthly recap shows when you use Claude most and what you spent that time working on, with options to set quiet hours and nudges to take breaks. Find your dashboard in Settings under Reflect: claude.ai/settings/refle…

🚀 Agent Go: Shenzhen | AI Agent Mixer AI Agents are no longer a concept—they are already at work! No theories, just real product demos & real data. 🤝 HOST: @ME_MetaEra, @AgentON_, @tencentcloud, @OpenSandAI 📅 July 18, 14:00-17:00 📍 Shenzhen 👉 RSVP: luma.com/cy06fiou

SpaceXAI’s Grok 4.5 scores 54 to place fourth on the Artificial Analysis Intelligence Index following only Fable 5, GPT-5.5, and Opus 4.8. It scores on par with GPT-5.5 in Codex on the Artificial Analysis Coding Agent Index in the Grok Build harness, at much lower cost Grok 4.5 improves 16 points over Grok 4.3 on the Intelligence Index, bringing SpaceXAI to the intelligence frontier behind only OpenAI and Anthropic, and outperforming all open weights models and notably Google’s Gemini models. Key standout areas of performance are agentic knowledge work and coding. Grok 4.5 in Grok Build scores 76 on the Artificial Analysis Coding Agent Index, on par with GPT-5.5 (xhigh) in Codex and just below Fable 5 (max) in Claude Code, and at a small fraction of the token usage and price. Congratulations to @SpaceXAI, @cursor_ai, and @elonmusk on the impressive release! Key Takeaways: ➤ Grok 4.5 performs very strongly on agentic tasks. Grok 4.5 ranks #4 on GDPval-AA v2 with an Elo of 1543, between Claude Opus 4.8 (1600) and GLM-5.2 (1513). It achieves the top score on 𝜏³-Banking of 33%, above 31% from GPT-5.5 (xhigh), and sits on the cost vs performance Pareto frontier across all three agentic evaluations in the Intelligence Index ➤ Grok 4.5 is one of the most cost efficient models to run for near-frontier intelligence. It costs $0.31 per task on the Artificial Analysis Intelligence Index and $2.59 per task on the Artificial Analysis Coding Agent Index within Grok Build ➤ Low cost for Grok 4.5 is driven by both low pricing and token efficiency. Grok 4.5 has a headline price over 60% lower than Claude Opus 4.8 and GPT-5.5, and used ~14k output tokens per Intelligence Index Task - over 60% lower than Opus 4.8. On the Coding Agent Index, Grok 4.5 stands out on the Pareto frontier of Coding Agent Index score vs. Total Tokens, using only 1.9M tokens for the Coding Agent Index while scoring 76 ➤ As a coding agent, Grok 4.5 in Grok Build is on par with GPT-5.5 and offers efficiency benefits: In our Artificial Intelligence Coding Agent Index that consists of DeepSWE, Terminal-Bench v2, and SWE-Atlas QnA, Grok 4.5 in Grok Build ranks third, on par with GPT-5.5 (Codex) and below Fable 5 (Claude Code). It is also very efficient in achieving this result: Grok 4.5 in Grok Build cost $2.49 per task while Fable 5 in Claude Code cost $11.80 and GPT-5.5 in Codex $5.07. This is driven by relatively low token pricing and the model using far fewer tokens than comparable models (1.9M average tokens used per task), significantly less than Fable 5 in Claude Code (7.2M) and GPT-5.5 in Codex (6.2M) Other model details: ➤ Context window of 500k tokens - a reduction from Grok 4.3’s 1M token context, but retaining configurable reasoning and vision input ➤ Pricing of $2/$6 per 1M tokens of input/output; cache hits are discounted by 75% to $0.5 per 1M tokens, and costs still double with long (>200k token) inputs ➤ As Elon Musk has disclosed, Grok 4.5 is 3x larger than its predecessor at 1.5T parameters

JUST IN: China to let top AI companies buy limited Nvidia H200 chips

AI is evolving fast. Your token strategy should too. OpenSand connects leading AI models through one platform, helping teams optimize token usage, manage AI costs, and scale applications efficiently. More models. Smarter token management. Better AI economics. #AI #LLM

GPT-Live makes talking with AI feel like having a real conversation. It’s also our smartest voice model yet. openai.com/index/introduc…

Announcing Grok 4.5, our first model trained specifically for coding and agents. It was trained with Cursor and offers frontier intelligence at leading speeds and cost efficiency. x.ai/news/grok-4-5

Introducing GPT-Live, a new generation of voice models for natural human-AI interaction. Rolling out in ChatGPT starting today. You’ll want to turn the sound on for this one.

Based on strong positive feedback from customers in our beta test program, @SpaceXAI will make Grok 4.5 available to the public tomorrow. It is an Opus-class model, but faster, more token-efficient and lower cost.

BREAKING: OpenAI has reportedly been granted U.S. approval for a broad GPT-5.6 rollout.

JUST IN: SpaceXAI to reportedly launch new AI model with Cursor as soon as tomorrow.

Just dropped: The Gemma 4 Technical Report! Dive into the decisions behind our latest open-weight multimodal models, Gemma 4 (E2B–31B). Discover details on how the Gemma team approaches architecture, efficiency and responsibility. The report also covers the recent encoder-free 12B variant, quantization-aware training and multi-token prediction (MTP) drafters.

A few patterns we frequently use with Fable 5: Use Fable 5 as an "advisor." An executor (Sonnet 5) calls Fable 5 for guidance. Most tokens are billed at the lower executor rate.