Grok 4.3 vs Muse Wonder.
Verdict by category, tale of the tape, shared benchmarks only, and cost at three workloads — all from the tracked data.
Verdict by category
| Category | Grok 4.3 | Muse Wonder | Winner |
|---|---|---|---|
| League Score | 73.7 | 79.0 | Muse Wonder |
| Coding (SWE-bench %) | — | — | — |
| Reasoning (GPQA %) | 90.1 | — | — |
| Context (tokens) | 1000000 | 1048576 | Muse Wonder |
| Speed (tok/s) | 151.8 | — | — |
| Price (blended $/1M) | $1.56 | $8.00 | Grok 4.3 (cheaper) |
Tale of the tape
| Spec | Grok 4.3 | Muse Wonder |
|---|---|---|
| Maker | xAI (SpaceXAI) | Meta |
| Released | Apr 30, 2026 | Oct 12, 2026 |
| League Score | 74 | 79 |
| Context | 1,000,000 tokens | 1,048,576 tokens |
| Max output | — | — |
| $/1M input | $1.25 | $4.00 |
| $/1M output | $2.50 | $20.00 |
| Weights | Closed | Closed |
| Speed | 151.8 t/s | — |
Head-to-head benchmarks (shared only)
| Benchmark | Grok 4.3 | Muse Wonder |
|---|---|---|
| No shared benchmark measurements yet — shown as not measured, never interpolated. | ||
Cost at three workloads
| Workload | Grok 4.3 | Muse Wonder |
|---|---|---|
| Light — 1M in / 250K out | $1.88 | $9.00 |
| Standard — 10M in / 2.5M out | $18.75 | $90.00 |
| Long-context — 50M in / 5M out | $75.00 | $300.00 |
The pick
Pick Grok 4.3 if you want the lower running cost.
Pick Muse Wonder if you want the higher overall League Score; you need the bigger context window.
All figures from the model database — sources and dates on each model page. Cost your own workload or compare a different pair.
Frequently asked questions
Which is better overall, Grok 4.3 or Muse Wonder?
Muse Wonder leads on overall League Score, 79 to 74 — a gap of 5 points on a composite of sourced benchmarks. That is overall form, not every category: check the per-category verdicts before choosing.
Which is cheaper, Grok 4.3 or Muse Wonder?
Grok 4.3 is cheaper: $1.56 vs $8.00 blended per 1M tokens (3:1 input/output mix) — about 5.1x less per token.
Which has the bigger context window, Grok 4.3 or Muse Wonder?
Muse Wonder, with 1M of context against 1M for Grok 4.3.
Are Grok 4.3 and Muse Wonder open source?
Grok 4.3 is closed weights — API access only; Muse Wonder is closed weights — API access only.