SpaceXAI, the AI arm led by Elon Musk, released Grok 4.6 the same day.
Both companies targeted their models for long-horizon agent work. The model continues to invoke tools, modify code, examine its results, and deliver a complete artifact.
V4 Pro’s output rate is about one-seventh of Grok 4.6, one-thirty-fifth of OpenAI’s GPT-5.6 Sol, and one-fifty-seventh of Claude Fable 5.
SpaceXAI lists Grok 4.6 at $2 per million input tokens and $6 per million output. A fast version is double the price, and long context requests over 200,000 tokens are $4 and $12.
DeepSeek beats that, listing input at $0.435 per million on a cache miss and as low as $0.003625 on a cache hit.
V4 Pro is a mixture of experts system with 1.6 trillion total parameters, 49 billion active per token, trained on more than 32 trillion tokens.
The context window is a million tokens with a 384,000 token output ceiling. Open weights were downloaded over 1.4 million times on Hugging Face in a month.
V4 Pro wins on security and automation. It scored 83.3 on the CyberGym agent benchmark, against 83.1 for Fable 5 and 78.3 for Claude Opus 4.8. On AutomationBench V4 Pro hit 31.8, ahead of both.
V4 Pro scored 87.9 on Terminal-Bench 2.1. The score is higher than Opus 4.8’s 85.0 but falls short of Fable 5 by 0.1 points.
SpaceXAI’s tests indicate that Grok 4.6 tops GDPVal-AA v2 with 1,753 Elo, up from Grok 4.5’s 1,526, and scored 15.8% on the Harvey legal benchmark, where GPT-5.6 Sol scored 2.5%.
Grok 4.6 ties GPT-5.6 Sol at 61 on the Artificial Analysis Intelligence Index, one point behind Fable 5.
In a Flappy Bird game build, V4 Pro used 20,000+ tokens for $0.019 and delivered richer detail. Grok 4.6 used about 5,000 tokens but cost $0.03.
V4 Pro also failed with a pelican animation. The bird appeared to be moving backwards.
DeepSeek V4 Pro 0813 is live on OpenRouter.@deepseek_ai reports large agent gains over V4 Pro Preview: DeepSWE 62.7 (+49.9), CyberGym 83.3 (+30.6), NL2Repo 61.5 (+23.0), and Terminal Bench 2.1 87.9 (+15.8)
More providers coming online soon
Use it now: https://t.co/1PYoEFbvyK
— OpenRouter (@OpenRouter) August 12, 2026
DeFi agents can run nonstop at $87 a month
Agents executing multi-step trades or watching DeFi positions run all the time.
Cryptopolitan has previously reported that an app that produces 100 million output tokens per month costs ~$87 on V4 Pro compared to ~$2,500 on Claude Opus 4.7 or $3,000 on GPT-5.5.
V4 Pro’s rates can make money for strategies that lose money on Western AI models.
DeepSeek reached the $0.87 rate in May, when it made a 75% cut permanent, dropping output from $3.48, as Cryptopolitan reported at the time.
DeepSeek has stated that a “significant increase” in overall API pricing is coming, so the current floor may not hold.
In a staff address on August 12, Musk said AI revenue would eclipse all other SpaceX lines combined in September and represent 99% of the company’s value in five years.