GPT-5.6 Sol vs GPT-6 Astra
As of Oct 15, 2026, GPT-5.6 Sol leads GPT-6 Astra in 4 of 10 shared categories: General LLM, Reasoning, Long context, and Factuality.
| Category | GPT-5.6 Sol | GPT-6 Astra |
|---|---|---|
| General LLM | #17 · #17 in General LLM Margin 9.042553191489361 LMArena leaderboard dataset · Oct 13, 2026 | #26 · #26 in General LLM Margin 13.829787234042556 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #12 · #12 in Reasoning Margin 6.914893617021278 LMArena leaderboard dataset · Oct 13, 2026 | #24 · #24 in Reasoning Margin 13.297872340425528 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 | #13 · #13 in Science Margin — Epoch AI benchmarking hub · Jul 9, 2026 | #2 · #2 in Science Margin — Epoch AI benchmarking hub · Sep 3, 2026 |
| Coding | #9 · #9 in Coding Margin 45.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 | #2 · Near-SOTA · Coding Margin 13.63636363636364 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #9 · #9 in Coding › Agentic Margin 45.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 | #2 · Near-SOTA · Coding › Agentic Margin 13.63636363636364 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #23 · Was SOTA · Coding › Web dev Margin 17.599999999999994 LMArena leaderboard dataset · Oct 13, 2026 | #2 · Near-SOTA · Coding › Web dev Margin 0.7999999999999972 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #13 · #13 in Long context Margin 6.914893617021278 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Long context Margin 13.297872340425528 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #3 · Near-SOTA · Vision Margin 10.526315789473685 Epoch AI benchmarking hub · Jul 9, 2026 | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 3, 2026 |
| Factuality | #15 · #15 in Factuality Margin 9.302325581395351 LMArena leaderboard dataset · Oct 13, 2026 | #29 · #29 in Factuality Margin 17.441860465116278 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 9, 2026 | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 3, 2026 |
GPT-5.6 Sol: $8.000000000000002 per 1M blended tokens.
GPT-6 Astra: $20 per 1M blended tokens.
GPT-5.6 Sol: closed weights.
GPT-6 Astra: closed weights.
General LLM: As of Oct 15, 2026, GPT-5.6 Sol leads GPT-6 Astra in General LLM at #17 against #26.
Reasoning: As of Oct 15, 2026, GPT-5.6 Sol leads GPT-6 Astra in Reasoning at #12 against #24.
Science: As of Oct 15, 2026, GPT-6 Astra leads GPT-5.6 Sol in Science at #2 against #13.
Coding: As of Oct 15, 2026, GPT-6 Astra leads GPT-5.6 Sol in Coding at #2 against #9.
Coding › Agentic: As of Oct 15, 2026, GPT-6 Astra leads GPT-5.6 Sol in Coding › Agentic at #2 against #9.
Coding › Web dev: As of Oct 15, 2026, GPT-6 Astra leads GPT-5.6 Sol in Coding › Web dev at #2 against #23.
Long context: As of Oct 15, 2026, GPT-5.6 Sol leads GPT-6 Astra in Long context at #13 against #25.
Vision: As of Oct 15, 2026, GPT-6 Astra leads GPT-5.6 Sol in Vision at #1 against #3.
Factuality: As of Oct 15, 2026, GPT-5.6 Sol leads GPT-6 Astra in Factuality at #15 against #29.
Abstraction (ARC): As of Oct 15, 2026, GPT-6 Astra leads GPT-5.6 Sol in Abstraction (ARC) at #1 against #3.
GPT-5.6 Sol or GPT-6 Astra?
As of Oct 15, 2026, GPT-5.6 Sol leads GPT-6 Astra in 4 of 10 shared categories: General LLM, Reasoning, Long context, and Factuality.
GPT-5.6 Sol or GPT-6 Astra for General LLM?
As of Oct 15, 2026, GPT-5.6 Sol leads GPT-6 Astra in General LLM at #17 against #26.
GPT-5.6 Sol or GPT-6 Astra for Reasoning?
As of Oct 15, 2026, GPT-5.6 Sol leads GPT-6 Astra in Reasoning at #12 against #24.
GPT-5.6 Sol or GPT-6 Astra for Science?
As of Oct 15, 2026, GPT-6 Astra leads GPT-5.6 Sol in Science at #2 against #13.