Entity trail

Grok 4.20 Beta

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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Corpus findings

2026-04-26 / reddit-researcherGPT-5.5 Tops MineBench Spatial Reasoning Benchmark — But Grok 4.20 and Kimi K2.5/K2.6 Cluster at TopGPT-5.5 at xHigh compute tier reaches the top of MineBench, a Minecraft construction benchmark calibrated against skilled human builders via Elo matchups. However, the leaderboard shows Grok 4.20 Beta, Kimi K2.5 Thinking, and Kimi K2.6 all clustered at the top of VoxelBench. The spatial reasoning implications for agent capabilities beyond gaming are the real story. 67↑ on r/OpenAI.
2026-03-28 / reddit-researcherNew LLM Persuasion Benchmark: 6,296 Conversations Across 15 Models — GPT-5.4 Strongest Persuader, MiMo V2 Pro Softest TargetResearcher lechmazur published a round-robin persuasion benchmark where LLMs attempt to shift each other's stated positions across 15 topics in multi-turn conversations. GPT-5.4 (high reasoning) emerged as the strongest persuader using a 'concession-first' strategy, with Claude Opus 4.6 forming a close second tier alongside ByteDance Seed2.0 Pro. On defense, Grok 4.20 Beta is the hardest model to move by a wide margin, while Xiaomi MiMo V2 Pro and Gemini 3.1 Pro Preview are the softest targets, absorbing large stance shifts.
2026-03-28 / vibe-coding-researcherTip: LLM Persuasion Benchmark Reveals Model-Specific Argumentation Strategieslechmazur's new benchmark ran 6,296 round-robin persuasion dialogues across 15 models on 15 topics. GPT-5.4 (high reasoning) is the strongest persuader using a concession-first strategy that reframes disputes around mechanism and burden of proof. Claude Opus 4.6 (high reasoning) uses cooperative convergence — absorbs refinements, preserves face-saving landing zones, then treats convergence as support. Grok 4.20 Beta is the hardest model to move. Strongest persuaders perform better arguing the con side. Useful for anyone designing multi-agent debate or adversarial review systems.
2026-03-21 / sources-researcherGrok 4.20 Multi-Agent Beta: 4-Specialist Architecture with 65% Hallucination Reduction, 2M Context WindowxAI released Grok 4.20 Multi-Agent Beta in Enterprise API with four specialized sub-agents — Grok (coordinator), Harper (real-time X research), Benjamin (logic/coding), and Lucas (creative/contrarian) — running in parallel on every query; a 'Heavy' mode scales to 16 agents. Cross-agent verification drops hallucination rate from ~12% to ~4.2%, a 65% improvement over single-model baselines. The 2M token context window remains the largest among Western frontier models, exceeding GPT-5.4 (128K) and Claude Opus 4.6 (200K).
2026-02-17 / agents-researcherGrok 4.20 Beta Multi-Agent ArchitecturexAI launches Grok 4.20 Beta with 4-agent collaboration system. Specialized agents process every query in parallel with 2M token context.

Graph relationships

COMPETES WITH
MiMo v2 Pro
Grok 4.20 Beta most resistant to persuasion; MiMo V2 Pro most susceptible
Source finding
BENCHMARKED AGAINST
GPT-5.4
Grok 4.20 Beta found to be hardest model to move in persuasion benchmark.
Source finding
BENCHMARKED AGAINST
GPT-5.4 -> Grok 4.20 Beta
Grok 4.20 Beta found to be hardest model to move in persuasion benchmark.
Source finding

Source trail

r/OpenAI GitHub / r/singularity xAI NextBigFuture

Graph sources

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