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Muse Spark 1.3 vs Grok 4.6
Muse Spark 1.3 scores higher than Grok 4.6 on all 4 public leaderboards that rate both. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, Muse Spark 1.3 is at 59.9 and Grok 4.6 at 51.4 (out of 100). On each maker's API, Muse Spark 1.3 costs $1.25 / $4.25 per 1M tokens (input / output) and Grok 4.6 $2 / $6.
Scores as published by each board; table composed November 12, 2026.
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Leaderboard by leaderboard
| Board | Muse Spark 1.3 | Grok 4.6 | Higher |
|---|---|---|---|
| LMArena Elo (community votes) | 1,655.1 | 1,618 | Muse Spark 1.3 |
| LiveBench global average (0-100) | 68.6 | 63.5 | Muse Spark 1.3 |
| SimpleBench AVG@5 % (private set) | 81.8 | 75.9 | Muse Spark 1.3 |
| Epoch AI Epoch Capabilities Index (ECI) · many benchmarks on one scale | 158.2 | 157.8 | Muse Spark 1.3 |
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, Muse Spark 1.3 is at 76.2 (#10 of 47) and Grok 4.6 at 34.7 (#31). Muse Spark 1.3 scores higher on all 3 coding boards that rate both.
| Coding board | Muse Spark 1.3 | Grok 4.6 |
|---|---|---|
| LMArena · Coding | 1,507.9 | 1,463.8 |
| LiveBench · Coding | 84.4 | 76.7 |
| Vals Vibe Code Bench | 85.9 | 76.2 |
Muse Spark 1.3 at a glance
- Developer
- Meta
- Status
- Live since September 2, 2026
- API price
- $1.25 input / $4.25 output per 1M tokens · Meta, muse-spark-1.3
- Context window
- 1.05M tokens
Live — Sep 2 · $1.25/$4.25 per 1M and 1M ctx, identical to 1.2 · Meta: ~20% fewer tool calls, ~25% fewer tokens vs 1.2 · open weights on the roadmap, undated · the open-weights Spark shipped Oct 15 as Muse Spark Open (its own entry).
Muse Spark 1.3 is out — same price as 1.2, and the radar called it in 61 seconds
2026-09-03 · Meta released Muse Spark 1.3 today. Its own words: "We're excited to release Muse Spark 1.3, which delivers improved performance across agentic and coding tasks." The numbers Meta gives are efficiency, not capability: ~20% fewer tool calls and ~25% fewer tokens than 1.2 on coding work, fewer interaction turns, less…
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.
Muse Spark 1.3 vs Grok 4.6: quick answers
Which is better, Muse Spark 1.3 or Grok 4.6?
It depends on what you measure. Muse Spark 1.3 scores higher than Grok 4.6 on all 4 public leaderboards that rate both. Muse Spark 1.3's widest lead is on LiveBench. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, Muse Spark 1.3 is at 59.9 and Grok 4.6 at 51.4 (out of 100).
Which is newer, Muse Spark 1.3 or Grok 4.6?
Muse Spark 1.3. It went live on September 2, 2026, 21 days after Grok 4.6 (August 12, 2026).
Which is cheaper, Muse Spark 1.3 or Grok 4.6?
Muse Spark 1.3 is cheaper on both input and output. On each vendor's own API, Muse Spark 1.3 is $1.25 input / $4.25 output per million tokens and Grok 4.6 is $2 input / $6 output per million tokens. Grok 4.6's rate rises for prompts over 200K tokens. Prices as published in the models.dev catalog, as of 2026-11-12.
Which has the bigger context window, Muse Spark 1.3 or Grok 4.6?
Muse Spark 1.3, at 1.05M tokens against Grok 4.6's 500K, as each vendor lists it.
How do Muse Spark 1.3 and Grok 4.6 compare for coding?
On the ArtificialWatch coding index, Muse Spark 1.3 is at 76.2 (#10 of 47) and Grok 4.6 at 34.7 (#31). Muse Spark 1.3 scores higher on all 3 coding boards that rate both.
Who makes Muse Spark 1.3 and Grok 4.6?
Muse Spark 1.3 is from Meta; Grok 4.6 is from xAI.
Where do these numbers come from?
Each score is the leaderboard's own published figure, read by ArtificialWatch (table composed November 12, 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