Muse Spark 1.1 vs Step 3.5 Flash
As of Oct 15, 2026, Muse Spark 1.1 leads Step 3.5 Flash in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Muse Spark 1.1
It used to be. Was SOTA in General LLM.
Step 3.5 Flash
#128 Best current rank: #128 in Factuality, as of Oct 15, 2026.
| Category | Muse Spark 1.1 | Step 3.5 Flash |
|---|---|---|
| General LLM | #10 · Was SOTA · General LLM Margin 5.319148936170208 LMArena leaderboard dataset · Oct 13, 2026 | #159 · #159 in General LLM Margin 84.57446808510639 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #13 · #13 in Reasoning Margin 7.4468085106382915 LMArena leaderboard dataset · Oct 13, 2026 | #162 · #162 in Reasoning Margin 86.70212765957447 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 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 | #39 · #39 in Coding › Web dev Margin 30.400000000000006 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #38 · #38 in Long context Margin 20.212765957446805 LMArena leaderboard dataset · Oct 13, 2026 | #156 · #156 in Long context Margin 82.97872340425532 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #28 · #28 in Vision Margin 76.3157894736842 Epoch AI benchmarking hub · Jul 9, 2026 | — |
| Factuality | #36 · Was SOTA · Factuality Margin 21.51162790697674 LMArena leaderboard dataset · Oct 13, 2026 | #128 · #128 in Factuality Margin 75 LMArena leaderboard dataset · Oct 13, 2026 |
Muse Spark 1.1: $2.0000000000000004 per 1M blended tokens.
Step 3.5 Flash: $0.15 per 1M blended tokens.
Muse Spark 1.1: closed weights.
Step 3.5 Flash: open weights.
General LLM: As of Oct 15, 2026, Muse Spark 1.1 leads Step 3.5 Flash in General LLM at #10 against #159.
Reasoning: As of Oct 15, 2026, Muse Spark 1.1 leads Step 3.5 Flash in Reasoning at #13 against #162.
Long context: As of Oct 15, 2026, Muse Spark 1.1 leads Step 3.5 Flash in Long context at #38 against #156.
Factuality: As of Oct 15, 2026, Muse Spark 1.1 leads Step 3.5 Flash in Factuality at #36 against #128.
Muse Spark 1.1 · Step 3.5 Flash
Muse Spark 1.1 or Step 3.5 Flash?
As of Oct 15, 2026, Muse Spark 1.1 leads Step 3.5 Flash in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Muse Spark 1.1 or Step 3.5 Flash for General LLM?
As of Oct 15, 2026, Muse Spark 1.1 leads Step 3.5 Flash in General LLM at #10 against #159.
Muse Spark 1.1 or Step 3.5 Flash for Reasoning?
As of Oct 15, 2026, Muse Spark 1.1 leads Step 3.5 Flash in Reasoning at #13 against #162.
Muse Spark 1.1 or Step 3.5 Flash for Long context?
As of Oct 15, 2026, Muse Spark 1.1 leads Step 3.5 Flash in Long context at #38 against #156.