Claude Opus 4.8 vs Step 5 Preview
As of Oct 14, 2026, Claude Opus 4.8 leads Step 5 Preview in 4 of 5 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
Step 5 Preview
#31 Best current rank: #31 in Coding › Web dev, as of Oct 14, 2026.
| Category | Claude Opus 4.8 | Step 5 Preview |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #60 · #60 in General LLM Margin 40.816326530612244 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 | #49 · #49 in Reasoning Margin 34.246575342465746 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 |
| Science | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 | — |
| Coding | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #12 · #12 in Coding › Agentic Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #33 · Was SOTA · Coding › Web dev Margin 29.90654205607477 LMArena leaderboard dataset · Oct 13, 2026 | #31 · #31 in Coding › Web dev Margin 28.037383177570092 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #56 · #56 in Long context Margin 38.095238095238095 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 | #57 · #57 in Factuality Margin 43.28358208955224 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | — |
Claude Opus 4.8: $10 per 1M blended tokens.
Step 5 Preview: $1.4249999999999998 per 1M blended tokens.
Claude Opus 4.8: closed weights.
Step 5 Preview: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.8 leads Step 5 Preview in General LLM at #20 against #60.
Reasoning: As of Oct 14, 2026, Claude Opus 4.8 leads Step 5 Preview in Reasoning at #10 against #49.
Coding › Web dev: As of Oct 14, 2026, Step 5 Preview leads Claude Opus 4.8 in Coding › Web dev at #31 against #33.
Long context: As of Oct 14, 2026, Claude Opus 4.8 leads Step 5 Preview in Long context at #10 against #56.
Factuality: As of Oct 14, 2026, Claude Opus 4.8 leads Step 5 Preview in Factuality at #21 against #57.
Claude Opus 4.8 · Step 5 Preview
Claude Opus 4.8 or Step 5 Preview?
As of Oct 14, 2026, Claude Opus 4.8 leads Step 5 Preview in 4 of 5 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.8 or Step 5 Preview for General LLM?
As of Oct 14, 2026, Claude Opus 4.8 leads Step 5 Preview in General LLM at #20 against #60.
Claude Opus 4.8 or Step 5 Preview for Reasoning?
As of Oct 14, 2026, Claude Opus 4.8 leads Step 5 Preview in Reasoning at #10 against #49.
Claude Opus 4.8 or Step 5 Preview for Coding › Web dev?
As of Oct 14, 2026, Step 5 Preview leads Claude Opus 4.8 in Coding › Web dev at #31 against #33.