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- Sep 21, 202690% CONFIDENCEfrom the source
Grok 4.7 Released
- SpaceXAI released Grok 4.7 on 21 September 2026, calling it "our most capable model for coding and knowledge work", served "at the same price and speed as Grok 4.6"[1]
- It uses a new, larger base model, a longer reinforcement-learning run weighted toward problems that take many hours, better self-verification and long-context management, and was trained to work natively in the Grok Bot harness[1]
- Decrypt reports it has 2.1 trillion parameters, up 40% from Grok 4.6's 1.5 trillion, with supplemental training data from SpaceX: Starlink satellite telemetry, manufacturing records and engineering failure logs[4]
- It came after Elon Musk walked the timeline back at least five times since late July, from "four weeks out" to "needs a few more days to cook" on 11 September; days before launch he said it should land "roughly on par with" Claude Opus 5.0[4]
- Independent tests put it mid-pack: 46 on the Artificial Analysis Intelligence Index against 53 for Claude Fable 5.1 and GPT-6, and 26% on Artificial Analysis' Terminal-Bench 4.0 run against 60% for GPT-6 Astra[5]
- It went live in the Grok app, Cursor, Grok Build and the API, and GitHub began rolling it out in Copilot the same day[1][4][6]
Notable features
- Prices per million tokens: $2 input, $0.50 cached input and $6 output below 200k prompt tokens, and $4, $1 and $12 above; a Grok 4.7 Fast variant with twice the output speed costs twice as much and is offered only in Cursor and Grok Build[1][2]
- A 500k-token context window, text and image input with text-only output, no output limit, and reasoning effort from low to xhigh, with high the default[2]
- SpaceXAI's own scores (xhigh): CursorBench 4.0 46.3% against 40.4% for Grok 4.6 and 51.8% for Fable 5.1, DeepSWE v1.1 71.0% (high effort), EEBench 64.0%, Terminal-Bench 4.0 37.6% and GDPval 1695 Elo against Fable 5.1's 1735[1]
- An entirely new safeguard stack: it tops LatchBio's biosafety benchmark at 62.4% and lets only 3.3% of risky dual-use prompts through on SpaceXAI's HackerBench v0.3[1]
- Select cybersecurity partners get invite-only access to its red-team capabilities for defence research[1]
References 684% CONFIDENCEOverall confidence: 84%How well the pin's source and references back up its dates.Weighted average of how firmly 6 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]90%x.ai/news/grok-4-7x.ai· Posted Sep 28, 2026· Starts Sep 21, 2026 ✓· 17% of score
The announcement is dated "Sep 21, 2026" and says "Grok 4.7 is available today in Cursor and Grok Build"; the xAI API release notes list it under September 21, and Decrypt[4] says "xAI released Grok 4.7 on Monday" (21 September).
- [2]95%Release Notes | SpaceXAI Docsdocs.x.ai· Added Sep 28, 2026· 17% of score
The API release notes under September 21: Grok 4.7 "is now available on the xAI API as grok-4.7" with a 500k context window, text and image input, text-only output and no output limit, $2 / $0.50 / $6 per million tokens below 200k prompt tokens and $4 / $1 / $12 above, reasoning effort low to xhigh, and a 2x-priced Grok 4.7 Fast only in Cursor and Grok Build.[1]
- [3]70%Grok Bot Release Notes: Grok 4.7 Makes Autonomous AI Teams Practicalpodcasts.apple.com· Published Sep 23, 2026· 17% of score
Grok Bot Release Notes's episode "Grok 4.7 Makes Autonomous AI Teams Practical" (2026-09-23) says: "So, okay! On September 21st , 2026, SpaceXAI officially dropped Grok 4.7, and... wow, this is a massive leap for persistent background agents. The main headline here is that Grok"[1]
- [4]85%xAI Launches Grok 4.7. It's Bigger, But Late to the AI Frontier Partydecrypt.co· Published Sep 21, 2026· Starts Sep 21, 2026· 16% of score
Decrypt's same-day report that xAI released Grok 4.7 on Monday after Musk walked the timeline back at least five times since late July; it reports 2.1 trillion parameters, up 40% from Grok 4.6's 1.5 trillion, and supplemental training on SpaceX engineering data.
- [5]85%xAI launches Grok 4.7 at bargain prices, but benchmarks reveal a wide gap to Claude and GPT-6the-decoder.com· Published Sep 21, 2026· 16% of score
The Decoder's same-day report: Grok 4.7 scores 46 on the Artificial Analysis Intelligence Index (v4.3.2) against 53 for Claude Fable 5.1 and GPT-6, and 26% on Artificial Analysis' Terminal-Bench 4.0 run against 60% for GPT-6 Astra and 55% for Claude Fable 5.1.
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