Actual usage of SpaceXAI Grok 4.5. First person reports that there are programmers successfully replacing Opus and Sonnet in all of his systems today with Grok 4.5. Grok 4.5 worked great. Spending can drop 50-80%. $200-500 instead of $1000. Grok 4.5 is faster than Opus 4.8. Maybe 2 to 3 times faster. OpenAI GPT 5.6 is coming tomorrow and will be faster but more expensive than Grok 4.5. Grok 4.5 can own the low end of developer usage (pretty, efficient value and good enough). This could send Cursor-SpaceXAI enterprise revenue up from $4 Billion ARR to $8-15 billion ARR in 1-2 months
Grok 4.5 is my default for all my coding work, I freaking love this model. Frontier intelligence that won't break the bank.
Grok 4.5: $2 in / $6 out
GPT 5.6: $5 in / $30 out
Opus 4.8: $5 in / $25 out https://t.co/5kINiWVGvO— Eric Jiang (@veggie_eric) July 8, 2026
New CursorBench results just dropped and Grok 4.5 is the story.
#3 overall at 66.7%. Right behind Fable 5 Max at 70.5%.
Now look at the cost column.
Fable 5 Max: $17.32 per task
Grok 4.5 High: $1.51 per taskThat is Fable level performance at roughly 1/10th the cost.
And it… pic.twitter.com/W3uwHkQmZr
— BridgeMind (@bridgemindai) July 8, 2026
Grok 4.5 is a "Wow!" moment. 🤯
> Opus 4.8 & GPT-5.5 level on benchmarks
> Costs less than Sonnet 5Is that real? Hard to believe.
Added Grok 4.5 as an implementer agent in fable-advisor. It replaces Sonnet 5.
Use Fable as the orchestrator and a combo of:
1. Grok 4.5
2. Opus… pic.twitter.com/UOYHjPjXoN— Dan McAteer (@daniel_mac8) July 8, 2026
Grok 4.5.
Pareto dominant for coding by the numbers.
We will see on the all-important vibes.
Instinct is the benchmarks are likely directionally accurate given the stated focus on real world utility. pic.twitter.com/aLihvvWfwA
— Gavin Baker (@GavinSBaker) July 8, 2026
Grok 4.5 is not yet using our internally developed C/C++ inference software that exact maps to the GB300 hardware. Doubling or more of the current speed is probably achievable. https://t.co/SER5w5fWh0
— Elon Musk (@elonmusk) July 8, 2026
Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million readers per month. His blog Nextbigfuture.com is ranked #1 Science News Blog. It covers many disruptive technology and trends including Space, Robotics, Artificial Intelligence, Medicine, Anti-aging Biotechnology, and Nanotechnology.
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A frequent speaker at corporations, he has been a TEDx speaker, a Singularity University speaker and guest at numerous interviews for radio and podcasts. He is open to public speaking and advising engagements.
“Our AI outperforms all others on our own benchmarks that we made!”