Muse Spark vs Step 5 Preview
As of Oct 14, 2026, Muse Spark leads Step 5 Preview in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Muse Spark
It used to be. Was SOTA in General LLM.
Step 5 Preview
#31 Best current rank: #31 in Coding › Web dev, as of Oct 14, 2026.
| Category | Muse Spark | Step 5 Preview |
|---|---|---|
| General LLM | #12 · Was SOTA · General LLM Margin 8.163265306122454 LMArena leaderboard dataset · Oct 13, 2026 | #60 · #60 in General LLM Margin 40.816326530612244 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #17 · Was SOTA · Reasoning Margin 12.328767123287676 LMArena leaderboard dataset · Oct 13, 2026 | #49 · #49 in Reasoning Margin 34.246575342465746 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #7 · Was SOTA · Math Margin 13.333333333333329 Epoch AI benchmarking hub · Apr 8, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #37 · #37 in Science Margin — Epoch AI benchmarking hub · Apr 8, 2026 | — |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #8 · #8 in Coding › Web dev Margin — LMArena leaderboard dataset · Jun 5, 2026 | #31 · #31 in Coding › Web dev Margin 28.037383177570092 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #38 · #38 in Long context Margin 25.850340136054427 LMArena leaderboard dataset · Oct 13, 2026 | #56 · #56 in Long context Margin 38.095238095238095 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #23 · #23 in Factuality Margin 17.910447761194035 LMArena leaderboard dataset · Oct 13, 2026 | #57 · #57 in Factuality Margin 43.28358208955224 LMArena leaderboard dataset · Oct 13, 2026 |
Muse Spark: price per 1M tokens is unset in the catalog.
Step 5 Preview: $1.4249999999999998 per 1M blended tokens.
Muse Spark: closed weights.
Step 5 Preview: closed weights.
General LLM: As of Oct 14, 2026, Muse Spark leads Step 5 Preview in General LLM at #12 against #60.
Reasoning: As of Oct 14, 2026, Muse Spark leads Step 5 Preview in Reasoning at #17 against #49.
Coding › Web dev: As of Oct 14, 2026, Muse Spark leads Step 5 Preview in Coding › Web dev at #8 against #31.
Long context: As of Oct 14, 2026, Muse Spark leads Step 5 Preview in Long context at #38 against #56.
Factuality: As of Oct 14, 2026, Muse Spark leads Step 5 Preview in Factuality at #23 against #57.
Muse Spark or Step 5 Preview?
As of Oct 14, 2026, Muse Spark leads Step 5 Preview in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Muse Spark or Step 5 Preview for General LLM?
As of Oct 14, 2026, Muse Spark leads Step 5 Preview in General LLM at #12 against #60.
Muse Spark or Step 5 Preview for Reasoning?
As of Oct 14, 2026, Muse Spark leads Step 5 Preview in Reasoning at #17 against #49.
Muse Spark or Step 5 Preview for Coding › Web dev?
As of Oct 14, 2026, Muse Spark leads Step 5 Preview in Coding › Web dev at #8 against #31.