CerteraAI collects feedback from legal professionals to understand which AI models provide the most accurate legal-related output. Try now: https://xitter.cf/t.co/qXBLMMqvyY
Joined July 2026
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This week's current Legal AI Leaderboard as taken from pairwise comparisons by vetted legal professionals is posted below. @GeminiApp models hold the top three spots this time around. @OpenAI and @Anthropic models round out the rest of the top 10. See the full leaderboard here: certera.ai/legal-llm-leaderb…
Wonder is now live at certera.ai if you want to give it a spin to see how it does on legal work. Use one of our pre-built workflows, or run your own prompt. You can also select other models to compare it against.
We’re excited to introduce the Muse Wonder series with Muse Wonder and Muse Wonder Full, our most capable models yet. Both are frontier models, built to deliver state-of-the-art performance for personal and professional agentic tasks.
Muse Wonder is available today via the Meta Model API and Muse Code. Muse Wonder Full is available today for Muse Code subscribers. Muse Wonder will also soon power experiences in our personal agent product, Muse, rolling out first to subscribers.
Argon is now live at certera.ai if you want to give it a spin to see how it does on legal work. Use one of our pre-built workflows, or run your own prompt. You can also select other models to compare it against.
Curious how Google's new @GeminiApp Argon actually performs on real legal tasks?
We just added it to Certera.ai. You can now run it through pre-built legal workflows, like contract comparisons, deposition summaries, and citation checks, and evaluate it blind, side-by-side against other leading LLMs.
Run a test and see how it handles your day-to-day legal work.
Open and free to use for all legal professionals (don't need to be a lawyer).
Find it here: certera.ai/
Want to see how @Muse Wonder does on legal tasks? We added it to Certera so you can see for yourself. Just choose custom or single mode and see how it does.
Open to legal professionals and free to use.
Try it now: certera.ai/chat
Want to know what it really costs to do legal work on AI? There is a lot speculation, so we wanted to know for real. We ran more than 2000 prompts over most available LLMs to figure it out.
TL;DR:
• Simple query: <$0.01 to ~$0.10
• Client alert: ~$0.04 avg (up to $0.27)
• Insurance memo: $0.22 median / $1.43 avg—ranging from $0.004 (GLM Flash) to $10.47 (Fable 5.1)
Check out full breakdown here:
certera.ai/research/what-ai-…
All the new @Zai_org and @alibaba_cloud models (GLM-5.3, GLM-5.3-Flash, Qwen3.8-Flash, and Qwen3.8-27B) are now available for use on Certera.AI. To see how they do on legal work against other LLMs, just use custom mode to select the other models you want to compare and choose which output you prefer. Check it out at certera.ai.
We’ve integrated @courtlistener (powered by @FreeLawProject) directly into Certera.AI.
Here are 3 ways to use it:
1️⃣ Real-Time Data Connector: Enable CourtListener before prompting so LLMs pull directly from court dockets.
2️⃣ Automated Cite Checker: If an AI output includes a citation, Certera automatically prompts you to cross-reference and verify it against CourtListener.
3️⃣ Citation Checker Workflow: Upload entire legal briefs or pleadings to get a structured analysis on validity, proposition support, and controlling vs. persuasive authority.
Learn more here: certera.ai/research/courtlis…
We added @Anthropic's latest, Opus 5, to certera.ai. Want to see how it does against other LLMs on legal related prompts? Use custom mode to choose other models you want to compare.
Some report that the new @Kimi_Moonshot K3 performs better than Fable on some legal tasks. Want to find out for yourself? Use custom mode at certera.ai and select any model to compare.
Leader board is live. If you are a legal professional (don't have to be an attorney, just work in the industry), please create an account and run some queries. More use=better accuracy. 56 models and counting including all new ones including Grok 4.5. certera.ai/leaderboard