xAI releases Grok 4.6, matching GPT-5.6 Sol on intelligence index
xAI's Grok 4.6 scores 61 points on the Artificial Analysis Intelligence Index, tying GPT-5.6 Sol and trailing Claude Opus 5. It completes agentic workflows in about 53 steps versus Claude Opus 5's 103, at a price more than 60 percent lower.
First seen 12 Aug, 15:35 UTC on OpenRouter4 sourcesLast update 68d ago
xAILaunch · 12 Aug
Grok 4.6
Frontier-class model launch
$2.00 / $6.00per M tokens, in / out
500Kcontext
How Grok 4.6 compares
List prices per million tokens, context and Arena's text leaderboard, against xAI's other top models and the leading labs' best. The percentages are Grok 4.6's price against each.
| Model | Released | Input | Output | Context | Arena |
|---|---|---|---|---|---|
| Grok 4.6 | August 2026 | $2.00 | $6.00 | 500K | not ranked yet |
| Grok 4.7 | September 2026 | $2.00 | $6.00 | 500K | not ranked yet |
| Grok 4.5 | Jul 2026 | $2.00 | $6.00 | 500K | #44 1466 |
| Claude Opus 5.5 | September 2026 | $4.00 -50% | $20.00 -70% | 1M | #2 1507 |
| GPT-6 Astra | September 2026 | $10.00 -80% | $50.00 -88% | 1.05M | #30 1475 |
| Gemini 4 Argon | October 2026 | $2.00 | $10.00 -40% | 1M | #1 1525 |
Arena ranks the best effort setting of each model among all models on its text leaderboard. Every model and price.
What the sources say
Linked, never rewritten. Official means the lab itself.
Official0
No word from xAI yet.
How it unfolded
Every source in the order it appeared. Times in UTC.
12 Aug 15:35OpenRouter SpaceXAI: Grok 4.6 listed on OpenRouter12 Aug 16:54Hacker News Grok 4.6 scores 61 on the Artificial Analysis Intelligence Index12 Aug 18:33The Decoder SpaceXAI's Grok 4.6 matches OpenAI's best model and undercuts it on price13 Aug 01:27SiliconANGLE SpaceXAI releases flagship Grok 4.6 model with advanced reasoning capabilities
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