Muse Wonder vs Step 3.5 Flash
As of Oct 15, 2026, Muse Wonder leads Step 3.5 Flash in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Muse Wonder
Too new. Too new to call. The crown still needs confirming evidence.
Step 3.5 Flash
#128 Best current rank: #128 in Factuality, as of Oct 15, 2026.
| Category | Muse Wonder | Step 3.5 Flash |
|---|---|---|
| General LLM | #1 · Leading · crown pending Margin 0.5319148936170279 LMArena leaderboard dataset · Oct 13, 2026 | #159 · #159 in General LLM Margin 84.57446808510639 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Leading · crown pending Margin 0.5319148936170279 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 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #13 · #13 in Coding › Web dev Margin 9.599999999999994 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #7 · Pending · Long context Margin 3.723404255319167 LMArena leaderboard dataset · Oct 13, 2026 | #156 · #156 in Long context Margin 82.97872340425532 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #2 · Pending · Vision Margin 7.89473684210526 Epoch AI benchmarking hub · Oct 12, 2026 | — |
| Factuality | #1 · Leading · crown pending Margin 1.1627906976744242 LMArena leaderboard dataset · Oct 13, 2026 | #128 · #128 in Factuality Margin 75 LMArena leaderboard dataset · Oct 13, 2026 |
Muse Wonder: $8.000000000000002 per 1M blended tokens.
Step 3.5 Flash: $0.15 per 1M blended tokens.
Muse Wonder: closed weights.
Step 3.5 Flash: open weights.
General LLM: As of Oct 15, 2026, Muse Wonder leads Step 3.5 Flash in General LLM at #1 against #159.
Reasoning: As of Oct 15, 2026, Muse Wonder leads Step 3.5 Flash in Reasoning at #1 against #162.
Long context: As of Oct 15, 2026, Muse Wonder leads Step 3.5 Flash in Long context at #7 against #156.
Factuality: As of Oct 15, 2026, Muse Wonder leads Step 3.5 Flash in Factuality at #1 against #128.
Muse Wonder or Step 3.5 Flash?
As of Oct 15, 2026, Muse Wonder leads Step 3.5 Flash in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Muse Wonder or Step 3.5 Flash for General LLM?
As of Oct 15, 2026, Muse Wonder leads Step 3.5 Flash in General LLM at #1 against #159.
Muse Wonder or Step 3.5 Flash for Reasoning?
As of Oct 15, 2026, Muse Wonder leads Step 3.5 Flash in Reasoning at #1 against #162.
Muse Wonder or Step 3.5 Flash for Long context?
As of Oct 15, 2026, Muse Wonder leads Step 3.5 Flash in Long context at #7 against #156.