Grok 4.5
It’s out: Grok 4.5 went public Thursday, Jul 9 — leapfrogging the roadmapped 4.4 and landing the same day as GPT-5.6 and Meta’s Muse Spark 1.1. The 1.5T-parameter V9 model is live in Grok Build, in Cursor on all plans, and from the SpaceXAI console at $2 in / $6 out per million tokens — though not yet in the EU. SpaceXAI’s own chart has it beating Opus 4.8 on two of the four benchmarks it chose to publish (DeepSWE 1.0 and Terminal-Bench 2.1) and trailing on the other two — the “Opus-class” call is still theirs, not an independent result.
Leaks & news, newest first.
Grok 4.5 is public — $2/$6 pricing and a two-for-four benchmark card
SpaceXAI opened Grok 4.5 to everyone: Grok Build, Cursor on all plans, and the SpaceXAI console, priced at $2 in / $6 out per million tokens — with no EU availability yet. The launch chart claims it outperforms Claude Opus 4.8, but the fine print shows wins on two of the four published benchmarks (DeepSWE 1.0, Terminal-Bench 2.1) and losses on the other two. It shipped into the busiest drop day of the year, opposite GPT-5.6 and Muse Spark 1.1. via SpaceXAI · Axios
Musk confirms: Grok 4.5 goes public Thursday
Following what he called positive beta feedback inside SpaceX and Tesla, Musk announced Grok 4.5 opens to everyone on Thursday, Jul 9 — apparently leapfrogging the roadmapped Grok 4.4 entirely. His pitch: “Opus-class” but faster, more token-efficient and lower-cost, on the 1.5T V9 foundation. No benchmarks or pricing published yet — the claim is his alone. One more headline in the same breath: xAI is now integrated into SpaceX and rebranded SpaceXAI. via Yahoo Finance · Bloomingbit
"Unlock the full power of Chat with Grok 4.5" surfaces in the web UI
A string referencing Grok 4.5 appeared in the Grok web interface — the classic pre-launch tell. No official announcement, benchmarks, pricing or date yet. via TestingCatalog
Grok 4.5 enters private beta at SpaceX and Tesla
The 4.5 beta is reportedly live inside Musk's companies with no public access and no independent benchmarks. Musk described early performance as “close to or beyond Opus” — an internal impression, not a published result. via TechTimes
Under the hood: a 1.5T V9 foundation, Cursor data in the mix
Grok 4.5 is reportedly built on a 1.5T-parameter V9 foundation (~3× the size of v8-small) with Cursor coding data folded into supplemental training. A larger 2T run is said to be cooking for an August release. via Digital Applied
The xAI slate: 4.4 in weeks, seven models in training, Grok 5 at 10T
xAI's published roadmap put Grok 4.4 about two-to-three weeks out at ~1T parameters, with seven models in training overall and Grok 5 targeting 10 trillion parameters. via MindStudio
The official word.
"Opus-class — but faster, more token-efficient, and lower cost."
Elon Musk announcing the Jul 9 public launch · Jul 8, 2026 — his claim; no independent benchmarks yet
Grok 4.5 answered. Hear the next one first.
Grok 4.5 is live — this page is its drop record. The watch moves to Grok 5, in training on a 10T-parameter target, and the other 35 on the board. Email + Chrome push free, SMS and a phone call on paid tiers.