Arena.ai

@arena234k followers

Where AI meets the real world. We measure and advance the frontier of AI through community-driven evaluation. We’re hiring →

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Top outlier

19.4×

Best organic post

Peak views

270k

Single post

Bookmarks

270

Across 10 organic posts

Last scan

Oct 16

Community cache

Posts 10 posts

#	Date	Post	↓ Outlier	Views	Likes	Reposts	Bookmarks
1	Oct 8	Introducing the Arena Alignment Index, our new benchmark measuring safety and alignment of AI agents in real-world use. Built from 90K+ real-world agent sessions across 27 models,	19.4×	270k	586	52	95
2	Oct 15	Exciting update: There’s a new leader in the Agent Arena among open models. MiMo V2.6 Pro by @XiaomiMiMo has landed the #1 spot with +3.8% net improvement! Earlier this week we evo	3.8×	53k	392	28	43
3	Oct 14	Results based on +5K real-world agentic sessions are in: Muse Wonder (Max) by @AIatMeta just landed in the Agent Arena at #12 with +6.4% net improvement. This result is +2.8 pts an	2.5×	35k	278	22	33
4	Oct 14	Claude Haiku 5.5 (High) by @AnthropicAI has landed in the Agent Arena! Across +20.5K real-world agentic sessions from our global community of users, this release scored +1.48% net	1.7×	23k	249	14	23
5	Oct 16	Exciting news: Beam-1.0-501B-A23B by @Reflection_AI just landed #12 among open weight models in Agent Arena with -3.67% Net Improvement, and #22 among open in Code Arena: WebDev wi	1.1×	16k	140	16	22
6	Oct 15	Muse Spark Open by @AIatMeta is now in the Arena. Head to Agent Arena to test it out, scores coming soon! In Agent Arena, we measure models on millions of real-world, long-horizon	0.9×	12k	133	11	10
7	Oct 14	Max Spero, CEO of @pangram and one of TIME’s 100 most influential people in AI, just joined @petergostev to talk AI detection. @max_spero_ explains Pangram’s training process: synt	0.8×	11k	42	7	14
8	Oct 15	Model Insights Analyst, @DawidGalarowicz, shares his initial take on Muse Wonder by @AIatMeta, Le Chonk by @MistralAI, and two AI trends to watch next.	0.7×	10k	32	1	4
9	Oct 16	The biggest gap between AI labs isn't whether their agents get the job done. It's whether users actually enjoy working with them. We tracked the best agent from @AnthropicAI, @Open	0.7×	9.9k	118	9	23
10	Oct 13	Dive into the Code Arena: WebDev details at	0.4×	5.7k	7	0	2
11	Oct 14	View post on X	0.4×	5.3k	2	0	4
12	Oct 15	Dive into Agent Arena at and find more info about the Bash Recovery Signal below.	0.4×	5k	10	0	2
13	Oct 14	See the full Agent Arena leaderboard at	0.3×	4.5k	4	0	2
14	Oct 14	Claude Haiku 5.5 (High) by @AnthropicAI scored #27 overall in the Agent Arena. Dive into the details at:	0.3×	4.2k	9	1	1
15	Oct 15	Test Muse Spark Open in Battle Mode and Agent Mode at:	0.2×	3.1k	5	1	2
16	Oct 16	@reflection_ai Read more about Beam 1.0 on the @reflection_ai blog:	0.2×	2.6k	2	0	1
17	Oct 16	Beam-1.0-501B-A23B just landed in the Agent Arena. With this release, @Reflection_AI is now in the Agent Arena top 15 labs! Among US labs, Beam-1.0-501B-A23B is #6, and overall is	0.2×	2.6k	16	1	3
18	Oct 16	Dive into the Agent Arena and Code Arena leaderboards at:	0.1×	1.8k	3	0	1
19	Oct 16	Dive into the Agent Arena:	0.0×	507	0	0	0

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