GPT-5.5 vs GPT-6 Astra
As of Oct 14, 2026, GPT-5.5 leads GPT-6 Astra in 2 of 8 shared categories: General LLM and Factuality.
| Category | GPT-5.5 | GPT-6 Astra |
|---|---|---|
| General LLM | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in General LLM Margin 17.006802721088434 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 | #23 · #23 in Reasoning Margin 16.438356164383563 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #1 · SOTA · Math Margin 0 Epoch AI benchmarking hub · Sep 3, 2026 |
| Science | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 2026 | #2 · #2 in Science Margin — Epoch AI benchmarking hub · Sep 3, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #2 · Near-SOTA · Coding Margin 13.63636363636364 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #2 · Near-SOTA · Coding › Agentic Margin 13.63636363636364 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #44 · #44 in Coding › Web dev Margin 40.18691588785047 LMArena leaderboard dataset · Oct 13, 2026 | #2 · Near-SOTA · Coding › Web dev Margin 0.9345794392523317 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 | #22 · #22 in Long context Margin 14.965986394557817 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 3, 2026 |
| Factuality | #5 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Factuality Margin 19.402985074626883 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 3, 2026 |
GPT-5.5: $11.25 per 1M blended tokens.
GPT-6 Astra: $20 per 1M blended tokens.
GPT-5.5: closed weights.
GPT-6 Astra: closed weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads GPT-6 Astra in General LLM at #21 against #25.
Reasoning: As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Reasoning at #23 against #25.
Science: As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Science at #2 against #30.
Coding › Web dev: As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Coding › Web dev at #2 against #44.
Long context: As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Long context at #22 against #23.
Vision: As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Vision at #1 against #10.
Factuality: As of Oct 14, 2026, GPT-5.5 leads GPT-6 Astra in Factuality at #5 against #25.
Abstraction (ARC): As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Abstraction (ARC) at #1 against #7.
GPT-5.5 or GPT-6 Astra?
As of Oct 14, 2026, GPT-5.5 leads GPT-6 Astra in 2 of 8 shared categories: General LLM and Factuality.
GPT-5.5 or GPT-6 Astra for General LLM?
As of Oct 14, 2026, GPT-5.5 leads GPT-6 Astra in General LLM at #21 against #25.
GPT-5.5 or GPT-6 Astra for Reasoning?
As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Reasoning at #23 against #25.
GPT-5.5 or GPT-6 Astra for Science?
As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Science at #2 against #30.