Muse Spark 1.2 vs Solar Pro 4
Specs, per-token pricing, and live benchmark scores — refreshed daily from our benchmark database.
Specs & pricing
| Muse Spark 1.2 | Solar Pro 4 | |
|---|---|---|
| Company | Meta AI | Upstage |
| Released | Aug 2026 | Aug 2026 |
| Context window | 1.0M | 524K |
| Input /1M tokens | $1.25 | $0.03 |
| Output /1M tokens | $4.25 | $0.12 |
| Open weights | No | No |
Benchmarks
| Benchmark | Muse Spark 1.2 | Solar Pro 4 |
|---|---|---|
| GPQA | 90.4% | — |
| Hallucination Rate (lower is better) | 33.3% | — |
Scores come from published leaderboards and official model cards (sources listed on the benchmarks page) and refresh daily. Pricing via vendor pages and OpenRouter.