The most likely Grok 4.7 release date is 11 September 2026: Elon Musk posted on X on 1 September that Grok 4.7 comes out in 10 days, and as of 10 September xAI has published nothing official — no model page, no API identifier, no pricing — which puts the launch window at right now, give or take the slippage xAI is known for. That matters if you are deciding whether to start a build on Grok 4.6 today or hold a few days for the successor, and the honest answer depends on how much weight you give a Musk timeline versus xAI's actual shipping record. Both are covered below, with every claim dated and sourced, so you can make that call on evidence rather than hype.
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Grok 4.7 Release Date: Every Public Signal So Far
Every date we have for Grok 4.7 comes from Elon Musk's posts on X, and CellCog's dated timeline of those posts, published 8 September 2026, lays them out in order. On 24 July, Musk said to expect Grok 4.6 in two weeks and Grok 4.7 in four weeks. On 28 July he softened that to Grok 4.7 arriving a few weeks after 4.6. On 12 August — the day Grok 4.6 actually shipped — he said the new model should be ready in three to four weeks. Then on 1 September came the firmest signal yet: Grok 4.7 comes out in 10 days, which points squarely at 11 September 2026.
Notice the pattern in those four statements about the Grok 4.7 release date: each one tightened rather than slipped. A four-week promise in July became a ten-day countdown in September, and a countdown with a specific endpoint is a different kind of claim from a vague window. Musk tends to post countdowns only when a model is already in late internal testing, which is consistent with what happened before Grok 4.6 arrived. None of this is an official xAI announcement, though — and that distinction matters, as the next section shows.
What xAI's Own Docs Show Today
Checked on 10 September 2026, the models page in xAI's official documentation still lists Grok 4.6 as the newest model, described as the most intelligent and fastest model xAI has built. There is no grok-4.7 entry anywhere in the pricing table — no model ID, no context window, no price. The current line-up runs from grok-4.6 and grok-4.5 at 500k context, priced at 2 to 4 US dollars per million input tokens and 6 to 12 US dollars per million output tokens, down through grok-4.3 with a 1M context window at roughly half that, plus the specialised grok-build-0.1 at 256k context for coding work.
The absence of a Grok 4.7 docs entry two days before the rumoured date is not a red flag in itself. When Grok 4.6 launched on 12 August, its documentation and API identifier appeared on launch day, not before — xAI does not pre-publish model pages. So the docs tell you the release has not happened yet, and nothing more. What they do give you is the baseline: whatever Grok 4.7 costs, the 4.6 pricing above is the reference point xAI has to beat or justify exceeding.
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What Musk Claims Grok 4.7 Will Deliver
Everything known about Grok 4.7's capabilities is a Musk claim rather than a benchmark, and CellCog's write-up is careful to flag all of it as unverified by xAI. The headline number: 2.1 trillion parameters, stated by Musk on 28 July. In the same post he described Grok 4.7 as better than 4.6 in every way, except slightly slower to serve, albeit with even better token efficiency. In July and again in August he said SpaceX engineering data was added during supplemental training, and in mid-August he claimed the model will exceed all current models.
Treat each of those Grok 4.7 claims as a marketing position until launch-day benchmarks exist. The slower-to-serve admission is actually the most informative line, because it suggests a much larger model than 4.6 rather than a distilled speed play — which fits the 2.1 trillion parameter figure. If serving speed matters to your workflows, that trade-off is worth watching when real numbers land.
How Grok 4.6 Sets The Bar
Grok 4.6 arrived on 12 August 2026 and launched inside Cursor and Grok Build on day one, per CellCog's shipping record. It scores 61 on the Artificial Analysis intelligence index — a five-point jump over Grok 4.5's 56 a month earlier, which made it the fastest riser among the frontier models. The three-way comparison of DeepSeek V4 Pro, Claude Fable 5 and Grok 4.6 on this site found it tied Claude Fable 5 on overall score in one blind test, and noted two structural advantages no rival matches: it is the only frontier model wired directly into X for real-time trends, and it has native image and video generation built in.
The agent side of the ecosystem is maturing too. If you are weighing xAI's coding tooling, the Grok Build CLI vs Claude Code breakdown covers where each wins today, while the write-ups on whether Grok Bot is free and Hermes Bot vs Grok Bot cover the autonomous-agent angle. Whatever Grok 4.7 turns out to be, it drops into an ecosystem that is already competitive — which is precisely why the release date question has money attached to it.
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Track Record: How Late Does xAI Actually Ship?
xAI's history says take Musk's dates seriously but not literally. Grok 4.5 shipped on 16 July — 46 days after Musk's late-May target. Grok 4.6 shipped on 12 August — five days after his around-7-August signal. That is a dramatic tightening from six weeks late to under a week late, and it is the strongest reason to believe the 1 September countdown lands close to on time. A sensible reading of the Grok 4.7 release date, weighing that record: expect launch between 11 and 15 September 2026, with day-one availability in Grok Build and partner tools like Cursor if xAI repeats the 4.6 playbook.
Whichever way you lean on the exact day, anchor your decisions on verifiable events rather than countdown posts. Two signals mean Grok 4.7 is actually live rather than launching soon: the model identifier appearing in xAI's documentation, and a pricing row for it appearing in the API table. Until both exist, everything else — parameter counts, benchmark boasts, launch-day rumours — is marketing for a product you cannot yet buy, and it should carry exactly that much weight in your planning.
Should You Wait For Grok 4.7 Or Build Now?
Build now — a few days of waiting buys you nothing that a model-swap later will not. Modern agent stacks treat the underlying model as a plug-in: the same workspace, prompts and skills run on whichever brain you point them at, which is the whole design philosophy behind Agent OS. If Grok 4.7 lands on 11 September and benchmarks well, switching your agent to it is a config change, not a rebuild. The Goldie Bench write-up covers how the current crop of brains compare in hands-on tests, and it gets updated as new models arrive — that is the practical way to judge Grok 4.7 once it exists, rather than pre-ordering your opinion from launch hype.
Context also matters: Grok 4.7 is not launching into a vacuum. OpenAI shipped GPT-6 Astra on 3 September — the GPT-6 Astra Hermes agent guide covers what that model changed — and the open-weight field keeps pressing from below, as the Kimi K3 vs Claude Fable 5 comparison shows. A ten-day-countdown launch in that environment tells you xAI feels competitive pressure too. For you, competition is leverage: better models, falling prices, and more room to build things that make money regardless of which lab is on top this month.
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