Gemini 2.5 Flash Preview 09 2025 vs GPT-5.5
As of Oct 14, 2026, Gemini 2.5 Flash Preview 09 2025 leads GPT-5.5 in 0 of 4 shared categories.
Gemini 2.5 Flash Preview 09 2025
#88 Best current rank: #88 in Factuality, as of Oct 14, 2026.
GPT-5.5
It used to be. Was SOTA in General LLM.
| Category | Gemini 2.5 Flash Preview 09 2025 | GPT-5.5 |
|---|---|---|
| General LLM | #111 · #111 in General LLM Margin 75.51020408163265 LMArena leaderboard dataset · Oct 13, 2026 | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #112 · #112 in Reasoning Margin 77.3972602739726 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Reasoning Margin 17.808219178082197 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 | — | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 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 | — | #44 · #44 in Coding › Web dev Margin 40.18691588785047 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #105 · #105 in Long context Margin 71.42857142857143 LMArena leaderboard dataset · Oct 13, 2026 | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 |
| Factuality | #88 · #88 in Factuality Margin 66.41791044776119 LMArena leaderboard dataset · Oct 13, 2026 | #5 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
Gemini 2.5 Flash Preview 09 2025: price per 1M tokens is unset in the catalog.
GPT-5.5: $11.25 per 1M blended tokens.
Gemini 2.5 Flash Preview 09 2025: closed weights.
GPT-5.5: closed weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads Gemini 2.5 Flash Preview 09 2025 in General LLM at #21 against #111.
Reasoning: As of Oct 14, 2026, GPT-5.5 leads Gemini 2.5 Flash Preview 09 2025 in Reasoning at #25 against #112.
Long context: As of Oct 14, 2026, GPT-5.5 leads Gemini 2.5 Flash Preview 09 2025 in Long context at #23 against #105.
Factuality: As of Oct 14, 2026, GPT-5.5 leads Gemini 2.5 Flash Preview 09 2025 in Factuality at #5 against #88.
Gemini 2.5 Flash Preview 09 2025 · GPT-5.5
Gemini 2.5 Flash Preview 09 2025 or GPT-5.5?
As of Oct 14, 2026, Gemini 2.5 Flash Preview 09 2025 leads GPT-5.5 in 0 of 4 shared categories.
Gemini 2.5 Flash Preview 09 2025 or GPT-5.5 for General LLM?
As of Oct 14, 2026, GPT-5.5 leads Gemini 2.5 Flash Preview 09 2025 in General LLM at #21 against #111.
Gemini 2.5 Flash Preview 09 2025 or GPT-5.5 for Reasoning?
As of Oct 14, 2026, GPT-5.5 leads Gemini 2.5 Flash Preview 09 2025 in Reasoning at #25 against #112.
Gemini 2.5 Flash Preview 09 2025 or GPT-5.5 for Long context?
As of Oct 14, 2026, GPT-5.5 leads Gemini 2.5 Flash Preview 09 2025 in Long context at #23 against #105.