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Grok 4.6 vs Grok 4.5
Grok 4.6 scores higher than Grok 4.5 on all 3 public leaderboards that rate both. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, Grok 4.6 is at 52.6 and Grok 4.5 at 28.6 (out of 100). On each maker's API, Grok 4.6 costs $2 / $6 per 1M tokens (input / output) and Grok 4.5 $2 / $6.
Scores as published by each board; table composed November 10, 2026.
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Leaderboard by leaderboard
| Board | Grok 4.6 | Grok 4.5 | Higher |
|---|---|---|---|
| LMArena Elo (community votes) | 1,617.8 | 1,552.4 | Grok 4.6 |
| SimpleBench AVG@5 % (private set) | 75.9 | 70 | Grok 4.6 |
| Epoch AI Epoch Capabilities Index (ECI) · many benchmarks on one scale | 157.9 | 155.1 | Grok 4.6 |
Raw scores are each board's own scale, so compare within a row, not across rows. Full table: the bench index.
For coding
On the ArtificialWatch coding index, Grok 4.6 is at 34.7 (#32 of 47) and Grok 4.5 at 24.3 (#41). Grok 4.6 scores higher on 1 of the 2 coding boards that rate both and Grok 4.5 on 1.
| Coding board | Grok 4.6 | Grok 4.5 |
|---|---|---|
| LMArena · Coding | 1,463.8 | 1,474.2 |
| Vals Vibe Code Bench | 76.2 | 69 |
Grok 4.6 at a glance
- Developer
- xAI
- Status
- Live since August 12, 2026
- API price
- $2 input / $6 output per 1M tokens · xAI, grok-4.6
- Context window
- 500K tokens
Live — Aug 12 at $2/$6 per 1M, unchanged from Grok 4.5.
Grok 4.5 at a glance
- Developer
- xAI
- Status
- Live since July 9, 2026
- API price
- $2 input / $6 output per 1M tokens · xAI, grok-4.5
- Context window
- 500K tokens
Live — public Jul 9.
Grok 4.6 vs Grok 4.5: quick answers
Which is better, Grok 4.6 or Grok 4.5?
It depends on what you measure. Grok 4.6 scores higher than Grok 4.5 on all 3 public leaderboards that rate both. Grok 4.6's widest lead is on LMArena. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, Grok 4.6 is at 52.6 and Grok 4.5 at 28.6 (out of 100).
Which is newer, Grok 4.6 or Grok 4.5?
Grok 4.6. It went live on August 12, 2026, 34 days after Grok 4.5 (July 9, 2026).
Which is cheaper, Grok 4.6 or Grok 4.5?
They cost the same per token. On each vendor's own API, Grok 4.6 is $2 input / $6 output per million tokens and Grok 4.5 is $2 input / $6 output per million tokens. Grok 4.6's rate rises for prompts over 200K tokens; Grok 4.5's rate rises for prompts over 200K tokens. Prices as published in the models.dev catalog, as of 2026-11-10.
Which has the bigger context window, Grok 4.6 or Grok 4.5?
Neither. Both take 500K tokens.
How do Grok 4.6 and Grok 4.5 compare for coding?
On the ArtificialWatch coding index, Grok 4.6 is at 34.7 (#32 of 47) and Grok 4.5 at 24.3 (#41). Grok 4.6 scores higher on 1 of the 2 coding boards that rate both and Grok 4.5 on 1.
Who makes Grok 4.6 and Grok 4.5?
Both are from xAI.
Where do these numbers come from?
Each score is the leaderboard's own published figure, read by ArtificialWatch (table composed November 10, 2026). Boards measure different things, so raw scores are only comparable within a row.
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Also: the bench index · API pricing · what a workload costs on each · the wire