Compare / Amazon vs xAI

AI labs compared · October 2026

Amazon vs xAI: which AI lab is ahead?

Each lab's best model on sale goes head to head on every kind of work we measure, from our own benchmarks and licensed sources. 8 models in all; a lab is only as good as the model you would actually pick from it.

4 models on sale with our resultsAmazon Best: Nova 2 Lite · newest: Nova 2 Lite
4 models on sale with our resultsxAI Best: Grok 4.7 · newest: Grok 4.7
Amazon wins 1xAI wins 3

Kinds of work led by each lab's best model there, of the 4 both are measured on.

Results as of 8 October 2026 (catalogue release 2026-10-08-4199ce0620fe). Models on sale means listed on OpenRouter today.

Amazon or xAI? The short answer

xAI is ahead: its best models beat Amazon's in 3 of the 4 kinds of work both are measured on; Amazon leads in 1.

  • Pick Amazon for sticking to the facts.
  • Pick xAI for agents and tool use, reasoning and knowledge and writing.
  • xAI's Grok 4.7 is #14 on our overall leaderboard; no Amazon model has enough of our results to be ranked there yet.
  • Prices start at $0.061 per million tokens for Amazon (Nova Micro 1.0) and $1.56 for xAI (Grok 4.3).

Head to head

13.4Nova 2 Lite
Best Intelligence Index
46.4Grok 4.7
$0.85Nova 2 Lite
Flagship price, per million tokens
$3.00Grok 4.7
$0.061Nova Micro 1.0
Cheapest model, per million tokens
$1.56Grok 4.3
4
Models on sale with our results
4

Each line names the model behind the number. Prices are blended, three input tokens to one output, at the developer's list price where we have read it; see every model's price. Intelligence Index from Artificial Analysis; overall score from our leaderboard.

Which lab is better for what

For each kind of work, each lab's best model there and its rank among every model on sale. Further right is better; the better rank is in green.

Product listingsTurning a sparse product feed and photos into listings that can go live not measured 4 of 20Grok 4.7
Decks from an analysisTurning a finished analysis into a deck you could present as it is not measured 9 of 19Grok 4.7
Marketing planningPlanning a year of ad spend without overspending not measured 11 of 19Grok 4.7
Agents and tool useMulti-step tasks with tools: support desks, coding agents, function calls 133 of 164Nova 2 Lite 10 of 164Grok 4.6
Professional workReal tasks from banking, consulting and law, business documents and freelance projects not measured 16 of 51Grok 4.6
Reasoning and knowledgeHard questions across science, maths and general knowledge 116 of 198Nova 2 Lite 13 of 198Grok 4.6
WritingWhat people prefer in blind comparisons, and judged writing quality 169 of 188Nova 2 Lite 40 of 188Grok 4.5
Sticking to the factsSummarising without inventing things, and factual answers 9 of 152Nova Pro 1.0 43 of 152Grok 4.5

Every model, by intelligence and price

Each dot is a model on sale with an Intelligence Index from Artificial Analysis. Up is smarter; left is cheaper. Hover or tap a dot for its name.

AmazonxAI

01020304050 $0.01$0.1$1$10 Price per million tokens, blended (log scale) Intelligence Index Nova 2 LiteNova Pro 1.0Grok 4.7Grok 4.6Grok 4.5Grok 4.3

On our overall leaderboard

The 1 of their models we rank overall: one score out of 100 across everything we publish (how the score works). Only models with enough of our own results are ranked.

  1. #14Grok 4.743

Benchmark by benchmark

The headline result of every benchmark both labs have models on: each lab's best model and its rank among the models on sale. Green marks the better rank.

MeasureAmazonxAI
Agents and tool use
Artificial Analysis · Terminal-Bench 2.1% of tasks, higher is better 16.1%Nova 2 Lite · 87 of 11588.4%Grok 4.6 · 6 of 115
Reasoning and knowledge
Artificial Analysis · Artificial Analysis Intelligence Indexindex score, higher is better 13.4Nova 2 Lite · 119 of 19846.4Grok 4.7 · 11 of 198
Artificial Analysis · Humanity's Last Exam% of questions, higher is better 11.6%Nova 2 Lite · 124 of 19744.1%Grok 4.6 · 21 of 197
Artificial Analysis · GPQA Diamond% of questions, higher is better 81.1%Nova 2 Lite · 92 of 18794.9%Grok 4.6 · 3 of 187
Sticking to the facts
Arena (formerly LMArena) · Overall · Text factualityArena rating, higher is better 1,380Nova 2 Lite · 103 of 1131,465Grok 4.5 · 28 of 113
Writing
Arena (formerly LMArena) · Overall · TextArena rating, higher is better 1,335Nova 2 Lite · 138 of 1661,466Grok 4.5 · 33 of 166
UGI Leaderboard · Writing score · UGIscore out of 100, higher is better 23.5Nova 2 Lite · 131 of 13863.3Grok 4.6 · 29 of 138

Quick answers

Is Amazon or xAI better?

xAI is ahead: its best models beat Amazon's in 3 of the 4 kinds of work both are measured on; Amazon leads in 1.

What is Amazon's best model?

Nova 2 Lite: 13.4 on the Artificial Analysis Intelligence Index.

What is xAI's best model?

Grok 4.7: #14 on the Spring Prompt overall leaderboard and 46.4 on the Artificial Analysis Intelligence Index.

Which is better for agents and tool use, Amazon or xAI?

xAI: its best model there, Grok 4.6, ranks 10 of 164 models on sale, against 133 for Amazon's Nova 2 Lite.

Which is better for reasoning and knowledge, Amazon or xAI?

xAI: its best model there, Grok 4.6, ranks 13 of 198 models on sale, against 116 for Amazon's Nova 2 Lite.

Which is better for writing, Amazon or xAI?

xAI: its best model there, Grok 4.5, ranks 40 of 188 models on sale, against 169 for Amazon's Nova 2 Lite.

Which is cheaper, Amazon or xAI?

Amazon's cheapest model with results, Nova Micro 1.0, costs $0.061 per million tokens (three input to one output), against $1.56 for Grok 4.3 from xAI.

Other labs compared

Which model is best for your product?

Benchmarks aren't your data. We test the models from Amazon, xAI and the rest on your own tasks, with the cost of every answer.

Talk to usSee the leaderboard