ITG NowGrok 4.3
xAI · Closed
An older, cheaper xAI model; it scores below the newer ones.
Key facts
- Maker
- xAI
- Open weights
- No, you use it through the maker's app or paid API
- License
- Owned by the maker, not open
- Memory (context window)
- 1 million tokens (how much it can read at once)1,000,000 tokens exactly
- Price
- $1.25 for every million tokens you send, $2.5 for every million tokens it writesA token is a small piece of a word · checked 17 Oct 2026 · price source
- Official page
- Official page for Grok 4.3 (docs.x.ai)
Scores
"Independent" = run by an outside group. "Maker's own number" = the company's own claim.
Chat & writingLMArena Text
1442 Arena score #13 of 15 models scored independent
When real people compare two AI answers side by side without knowing which AI wrote them, which one do they pick more often?
as of 15 Oct 2026 · source
Build websites & appsLMArena WebDev
1358 Arena score #17 of 18 models scored independent
When people ask two AIs to build the same website or app and compare the results, which one do they pick?
as of 17 Oct 2026 · source
News about Grok 4.3 on ITG Now
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FAQ
Is Grok 4.3 free and open?
No. Grok 4.3 is a closed model: you can only use it through xAI's own app or paid API.
How much does Grok 4.3 cost?
The listed price is $1.25 for every million tokens you send, $2.5 for every million tokens it writes, checked 17 Oct 2026. A token is a small piece of a word.
What is Grok 4.3 best at?
An older, cheaper xAI model; it scores below the newer ones. Its best result: #13 of 15 models scored on LMArena Text (chat & writing).
Who makes Grok 4.3?
Grok 4.3 is made by xAI.