SpaceXAI releases Grok 4.6, saying it matches GPT-5.6 Sol on the Artificial Analysis Intelligence Index, and prices it at $2/1M input and $6/1M output tokens

Grok 4.6 builds on Grok 4.5 with a particular focus on long-running agents and more ambitious interactive and visual work. — Try for free

xAI 2026-08-12

Context & Ripple Effects

Grok 4.6 follows a Grok 4.5 rollout through Grok Build, Cursor, and the SpaceXAI console at the same listed $2 input and $6 output rates. The update therefore changes the capability proposition—particularly for persistent agents and interactive visual work—rather than the headline token price.

Earlier Artificial Analysis coverage had already put Grok 4 at the top of its benchmark while noting a higher token price than Gemini 2.5 Pro and o3; the new parity claim frames SpaceXAI's pricing as part of its competitive positioning.

First-order effects

Grok users receive a new model positioned for longer-running agent workflows and interactive visual tasks without a change to the published $2-per-million-input-token and $6-per-million-output-token rates.
SpaceXAI can market Grok 4.6 against GPT-5.6 Sol using the Artificial Analysis Intelligence Index claim while retaining the pricing established with Grok 4.5.

Second-order effects

Buyers evaluating Grok against GPT-5.6 Sol gain a shared benchmark reference, increasing pressure on providers to distinguish their models on agent reliability, visual interaction, and total cost for a completed task rather than token rates alone.
Grok's existing distribution through Grok Build, Cursor, and the SpaceXAI console gives those channels a higher-capability model at unchanged list pricing, making workflow adoption more consequential than a standalone price cut.

Third-order effects

If frontier-model releases repeatedly hold token prices while extending autonomous-work capabilities, competitive comparison will shift from per-token pricing toward the inference spend and reliability required to finish multi-step work.
Independent benchmark parity claims are becoming a recurring tool for model vendors to contest leadership without relying solely on proprietary performance assertions.

The trend: Frontier AI competition is moving toward agent-capable models priced on stable token schedules but judged increasingly by useful-work output and third-party benchmark standing.

Discussion

@gavinsbaker Gavin Baker on x
Grok 4.6 is roughly the same performance as Fable 5 Max at an 85% discount. 80% cheaper for input tokens and 88% cheaper for output tokens. Pareto dominant. Grok 4.7 will be significantly better as is a much larger model with the Cursor and SpaceX data included in pretraining. [i…
@elonmusk Elon Musk on x
Grok 4.6 is a banger
@elonmusk Elon Musk on x
Grok 4.6 reaches 1753 ELO
@mntruell Michael Truell on x
Excited to release Grok 4.6. With each release, Grok is becoming a more capable digital colleague. 4.6 is significantly better at difficult tasks and knowledge work. It combines Opus-class intelligence and polish with very low cost and high speed.
@elonmusk Elon Musk on x
Grok 4.6 is now out 🚀🚀🚀 Smart, fast & amazing bang for buck!
@artificialanlys @artificialanlys on x
SpaceXAI's Grok 4.6 scores 61 on the Artificial Analysis Intelligence Index, joining the frontier in line with GPT-5.6 Sol, with standout agentic performance at lower cost Grok 4.6 gains 5 points over Grok 4.5 on the Intelligence Index just over one month after its release, or [i…
@chrisgpt Chris on x
Grok 4.6 is out!! and this is a much bigger jump over 4.5 It ties GPT 5.6 Sol at 61 on the Artificial Analysis Intelligence Index, leads GDPval-AA v2 and AA-Briefcase, and jumps from 15.7% to 26% on the new Terminal Bench V3. Fable 5 and 5.6 are still #1 on most coding [image]
@synthwavedd Leo on x
Holy shit lmao. Grok 4.6 benchmarks are out, and it's near SoTA on AA's Intelligence Index (61, matching Sol, 1 point behind Fable 5 and 2 points behind Opus 5), SoTA on GDPVal-AA v2, SoTA on AA-Briefcase and Harvey LAB (Vals), and 2nd only to Fable 5 on CursorBench v3.2, [image]
@spacexai @spacexai on x
Grok 4.6 is faster than comparable models and can handle much more challenging tasks than Grok 4.5. It's half the price of other frontier models at $2/M input and $6/M output tokens.
@spacexai @spacexai on x
Introducing Grok 4.6. It delivers frontier intelligence and is a significant improvement over Grok 4.5 at the same price. [image]
@mweinbach Max Weinbach on x
Grok 4.6 seems pretty great on DeepSWE and GDPVal. Same price as Grok 4.5 too [image]
@synthwavedd Leo on x
xAI have made an incredible comeback From the days of Grok 4 -> 4.3, where they were trailing the frontier by far, they're now arguably the 3rd best lab in the world - behind only Anthropic and OpenAI And with this minor version jump yielding +5 on AA's Intelligence Index, and [i…
@chetanp Chetan Puttagunta on x
Incredible achievement by SpaceXAI and Cursor. Enterprises and startups have already figured out Grok is a great model. The market opportunity is immense as Anthropic continues to be difficult to work with and is deeply unreliable as a partner/ vendor.
@patrickmoorhead Patrick Moorhead on x
Great to see the competition. It'll take while to gain the trust that this isn't a one hit wonder before people disconnect from what they're using today.
@bindureddy Bindu Reddy on x
Grok 4.6 just dropped and will be on LiveBench shortly - same price as Grok 4.5 which is great Not sure how much it really improves on 4.5. We will see
@mattshumer_ Matt Shumer on x
Looks like @SpaceXAI is catching up to the frontier. If this model is as good as the benchmarks say, they're on track to be a leading lab very soon... Super exciting shake-up in the AI race!
@eliebakouch Elie on x
grok 4.6 has a very impressive test time curve on cursorbench, in a league of its own they did more mid/pre-training on the grok 4.5 checkpoint and newer SFT stages with grok 4.5 traces and model base filtering. once again shows how important a good SFT ckpt is [image]
@kimmonismus @kimmonismus on x
You know whats crazy? Grok 4.6 is not only cheaper than Opus 5 and 5.6 Sol. Its even cheaper than Sonnet 5. While at the same time, at least on par with the sota models. *Thats* the real moat. [image]
@emostaque Emad on x
imo GDPVal is probably the most important benchmark, it measures the performance of models on real world tasks Big leap in performance here to top it at a great price, congrats to @SpaceXAI team & looking forward to the even bigger releases to come! https://openai.com/... [image]
@iterintellectus Vittorio on x
so they just... caught up? in three years?! grok is now frontier how does he do it?!
@arena @arena on x
Grok 4.6 is here! This release by @SpaceXAI just landed in the Code Arena: WebDev at #7 with 1618 pts. Grok 4.6 (High) is a big jump from Grok 4.5, which sits at #13 with 1553 pts. It's now on par with GPT-5.6 Sol xHigh (1622 pts) and Claude Fable 5 (1627 pts). All three [video]
r/grok r on reddit
Grok 4.6 released
@elonmusk Elon Musk on x
Try Grok 4.6 on tough real-world tasks!
@elonmusk Elon Musk on x
@beffjezos Grok 4.7 is significantly better than 4.6 and should be ready in 3 to 4 weeks. Initial training is complete and now we're adding a massive amount of SpaceX company data in supplemental training. This will be something special.
@cognition @cognition on x
Grok 4.6 is now available in Devin. Grok 4.6 marks a significant improvement over Grok 4.5, surpassing GPT-5.6 Sol, behind only Opus 5 and Fable 5. [image]
r/SpaceXBets r on reddit
If you wanna know why the stock just jumped:
@kimmonismus @kimmonismus on x
I'm taking this seriously now. Grok 4.6 was the leap I'd been hoping for. If the 10t model is still to come, then Elon's words can be taken seriously: it really could become the best model (in general). Although, of course, Anthropic already has Fable 5.5 ready and just waiting […
@theskory Boris Skorobogaty on x
Grok 4.6 is an excellent model. I've been using it heavily for the past couple of weeks and it handles everything from simple coding & code review all the way to designing and debugging complex systems with ease. What stands out even more is how strong it is outside of coding -
@_nathancalvin Nathan Calvin on x
Is this all the safety information they plan to put out for this release? Remarkably far behind peers at Meta, Anthropic, OpenAI, and Google [image]
@nvidia @nvidia on x
Congrats to the @SpaceXAI team on the release of Grok 4.6. Grok 4.6 brings frontier intelligence, running and trained on NVIDIA GB300 NVL72 with NVLink to deliver exceptional performance, reliability and lowest token cost.
@elonmusk Elon Musk on x
Grok 4.6 is objectively #1 when considering intelligence, speed & cost [image]
@eliebakouch Elie on x
interesting results from grok 4.6 model card: 1. huge progress on DeepSearchQA and their internal KernelBench 2. grok models are the best on internal spaceXAI engineer benchmark (they likely trained on similar data but still impressive) 3. grok 4.6 also sota at inferenceEval whi…

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