# AI leaderboard changes October 2026, so far As of Oct 15, 2026, 27 confirmed crown changes are recorded for October 2026. ## Confirmed crown changes - Oct 14, 2026. Decision models: vLLM-SR d3 (27B) and linne-oak 1.0 (31B) and Perplexity Decider v1.1 27B (Qwen3.8-27B, noncausal decision readout) are co-SOTA. Primary sources disagree beyond the margin of error, so the crown is shared with low confidence. - Oct 14, 2026. Decision models: vLLM-SR d3 (27B) and linne-oak 1.0 (31B) and Perplexity Decider v1.1 27B (Qwen3.8-27B, noncausal decision readout) are co-SOTA. Primary sources disagree beyond the margin of error, so the crown is shared with low confidence. - Oct 14, 2026. Decision models: vLLM-SR d3 (27B) and linne-oak 1.0 (31B) and Perplexity Decider v1.1 27B (Qwen3.8-27B, noncausal decision readout) are co-SOTA. Primary sources disagree beyond the margin of error, so the crown is shared with low confidence. - Oct 14, 2026. Decision models: Bobcat 1.3 (31B) takes the crown. First holder recorded for this category and slice. - Oct 14, 2026. Decision models › Vision: RSI-Jev v6.1 VL 27B (effort auto) takes the crown. First holder recorded for this category and slice. - Oct 14, 2026. Decision models: Nace.AI Drex v2.0 (35B-A3B) takes the crown. First holder recorded for this category and slice. - Oct 13, 2026. Reasoning: Kimi K3 and Mimo V2.6 Pro are co-SOTA. Crown change confirmed by two consecutive snapshots or two independent primary sources. - Oct 13, 2026. Long context: Kimi K3 and Mimo V2.6 Pro are co-SOTA. Crown change confirmed by two consecutive snapshots or two independent primary sources. - Oct 13, 2026. General LLM: Kimi K3 and Mimo V2.6 Pro and GLM 5.3 are co-SOTA. Crown change confirmed by two consecutive snapshots or two independent primary sources. - Oct 8, 2026. Decision models: decisio v0.8.0 on gemma-4-31B-it (frozen, FP8 on load, one prefill per state, self-hosted) takes the crown. First holder recorded for this category and slice. - Oct 8, 2026. Decision models: Perplexity Decider v1.1 27B (Qwen3.8-27B, noncausal decision readout) takes the crown. First holder recorded for this category and slice. - Oct 8, 2026. Decision models: Perplexity Decider v1.1 27B (Qwen3.8-27B, noncausal decision readout) takes the crown. First holder recorded for this category and slice. - Oct 8, 2026. Reasoning: Gemma 4 31B and Qwen3 8 27B and Gemma 4 26B A4b are co-SOTA. First holder recorded for this category and slice. - Oct 8, 2026. Long context: Gemma 4 31B and Gemma 4 26B A4b are co-SOTA. First holder recorded for this category and slice. - Oct 8, 2026. General LLM: Gemma 4 31B and Gemma 4 26B A4b are co-SOTA. First holder recorded for this category and slice. - Oct 8, 2026. Factuality: Gemma 4 31B and Gemma 4 26B A4b and Qwen3 8 27B are co-SOTA. First holder recorded for this category and slice. - Oct 8, 2026. Decision models: Perplexity Decider v1.1 27B (Qwen3.8-27B, noncausal decision readout) takes the crown. First holder recorded for this category and slice. - Oct 8, 2026. Decision models: Sage 1.3.0 (Levanto Labs) takes the crown. First holder recorded for this category and slice. - Oct 6, 2026. Coding › Agentic: Claude Opus 5.5 and Claude Sonnet 5.5 are co-SOTA. First holder recorded for this category and slice. - Oct 6, 2026. Coding: Claude Opus 5.5 and Claude Sonnet 5.5 are co-SOTA. First holder recorded for this category and slice. - Oct 6, 2026. Coding › Agentic: GLM 5.3 and GLM 5.3 Flash are co-SOTA. First holder recorded for this category and slice. - Oct 6, 2026. Coding: GLM 5.3 and GLM 5.3 Flash are co-SOTA. First holder recorded for this category and slice. - Oct 6, 2026. Image edit: Flux 2 Klein 4B takes the crown. First holder recorded for this category and slice. - Oct 2, 2026. Reasoning: Gemini 4 Argon and Claude Opus 5.5 are co-SOTA. Crown change confirmed by two consecutive snapshots or two independent primary sources. - Oct 2, 2026. Long context: Gemini 4 Argon and Claude Opus 5.5 are co-SOTA. Crown change confirmed by two consecutive snapshots or two independent primary sources. - Oct 2, 2026. General LLM: Gemini 4 Argon takes the crown. Crown change confirmed by two consecutive snapshots or two independent primary sources. - Oct 2, 2026. Factuality: Gemini 4 Argon and Claude Opus 5.5 and Claude Fable 5.1 are co-SOTA. Crown change confirmed by two consecutive snapshots or two independent primary sources. ## Top 3 - Claude Fable 5 at #1 in Abstraction (ARC) - Claude Fable 5.1 at #1 in Factuality - Claude Opus 5.5 at #1 in Reasoning - Claude Opus 5.5 at #1 in Coding - Claude Opus 5.5 at #1 in Coding › Agentic - Claude Opus 5.5 at #1 in Long context - Claude Opus 5.5 at #1 in Factuality - Claude Opus 5.5 at #1 in Abstraction (ARC) - Claude Sonnet 5.5 at #1 in Coding - Claude Sonnet 5.5 at #1 in Coding › Agentic - Flux 3 Video at #1 in Video generation - Gemini 3.8 Flash at #1 in Abstraction (ARC) - Gemini 4 Argon at #1 in General LLM - Gemini 4 Argon at #1 in Reasoning - Gemini 4 Argon at #1 in Science - Gemini 4 Argon at #1 in Long context - Gemini 4 Argon at #1 in Factuality - Gemini Omni 1.1 Flash at #1 in Video generation - Gemini Omni Flash at #1 in Video generation - GPT-6 Astra at #1 in Abstraction (ARC) - GPT-6.1 Sol at #1 in Abstraction (ARC) - Grok Imagine Video 1.5 Agent at #1 in Video generation - Jcorners Ingot 8B R3 at #1 in Embeddings - linne-oak 1.0 (31B) at #1 in Decision models - Muse Wonder at #1 in General LLM - Muse Wonder at #1 in Reasoning - Muse Wonder at #1 in Factuality - Perplexity Decider v1.1 27B (Qwen3.8-27B, noncausal decision readout) at #1 in Decision models - vLLM-SR d3 (27B) at #1 in Decision models - Bytedance Seed1 6 Embedding 1215 at #2 in Embeddings - Claude Fable 5.1 at #2 in Math - Claude Opus 4.6 at #2 in Reasoning - Claude Opus 4.6 at #2 in Long context - Claude Opus 4.6 Thinking at #2 in General LLM - Claude Opus 5.5 at #2 in General LLM - Decider 31B (NVFP4) at #2 in Decision models - Dreamina Seedance 2.0 720p at #2 in Video generation - Gemini 3.1 Pro Preview at #2 in Abstraction (ARC) - GPT Image 2.5 Flare at #2 in Image generation - GPT Image 2.5 Flare at #2 in Image edit - GPT-6 Astra at #2 in Science - GPT-6 Astra at #2 in Coding - GPT-6 Astra at #2 in Coding › Agentic - GPT-6 Astra at #2 in Coding › Web dev - GPT-6.1 Sol at #2 in Coding - GPT-6.1 Sol at #2 in Coding › Agentic - Kingsoft LLM Qzhou Embedding at #2 in Embeddings - Muse Wonder at #2 in Vision - Claude Fable 5 at #3 in General LLM - Claude Fable 5 at #3 in Reasoning - Claude Fable 5 at #3 in Long context - Claude Fable 5.1 at #3 in Coding - Claude Fable 5.1 at #3 in Coding › Agentic - Claude Fable 5.1 at #3 in Abstraction (ARC) - Claude Opus 4.6 at #3 in Factuality - Claude Opus 4.7 Thinking at #3 in General LLM - Claude Opus 5 at #3 in Abstraction (ARC) - Claude Sonnet 5.5 at #3 in Science - Claude Sonnet 5.5 at #3 in Coding › Web dev - Gemini 3.1 Pro Preview at #3 in Math - GPT Image 2 at #3 in Image generation - GPT Image 2 at #3 in Image edit - GPT-5.6 Sol at #3 in Vision - GPT-5.6 Sol at #3 in Abstraction (ARC) - Mai Image 2.5 Preview at #3 in Image generation - Mai Image 2.6 Preview at #3 in Image edit - Nvidia Llama Embed Nemotron 8B at #3 in Embeddings - Sieve 31B at #3 in Decision models - Wan3 0 at #3 in Video generation ## Benchmarks - LMArena Text (style-controlled, overall) updated Oct 13, 2026. - LMArena Text (style-controlled, coding) updated Oct 13, 2026. - LMArena Text (style-controlled, math) updated Oct 13, 2026. - LMArena Text (style-controlled, hard prompts) updated Oct 13, 2026. - LMArena Text (style-controlled, longer query) updated Oct 13, 2026. - LMArena Vision (style-controlled) updated Oct 9, 2026. - LMArena WebDev updated Oct 13, 2026. - LMArena Text-to-Image updated Oct 7, 2026. - LMArena Image Edit updated Oct 6, 2026. - LMArena Text factuality updated Oct 13, 2026. - GPQA Diamond updated Oct 7, 2026. - SimpleQA Verified updated Oct 7, 2026. - Terminal-Bench 4.0 updated Oct 6, 2026. - SWE-bench Pro V2 HARD updated Oct 14, 2026. - Humanity's Last Exam updated Oct 7, 2026. - GDP.pdf updated Oct 12, 2026. - MTEB Multilingual v2 (MMTEB) updated Oct 15, 2026. - MTEB English v2 updated Oct 15, 2026. - Open ASR Leaderboard (English short-form) updated Oct 15, 2026. - Decision Index Full updated Oct 14, 2026. - Decision Index ECE updated Oct 14, 2026. - Decision Index Brier updated Oct 14, 2026. - Decision Index latency updated Oct 14, 2026. - JevBench updated Oct 8, 2026. - JevBench price updated Oct 8, 2026.