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AIMODELRACE
Business

Best agent for legal & contracts

Contract review, clause comparison, legal research and drafting.

Leader

Photo finish

Claude Opus 5.5

Index

92.4

Lead

+0.4

% ahead

0.4%

over Claude Fable 5.1. Too close to call: choose on price, speed or the tools you already use.

Full ranking

Task index, 0 to 100. Bars are scaled to the field, so small gaps look small.

  1. 1
    Claude Opus 5.5
    92.4

    Precise reading and honest uncertainty.

  2. 2
    Claude Fable 5.1
    −0.492

    Best for complex multi-document matters.

  3. 3
    Harvey
    −3.489

    Purpose-built for law firms.

  4. 4
    GPT-6.1 Sol
    −4.488

    Clear drafting.

  5. 5
    Gemini 4 Argon
    −6.486

    Handles scanned exhibits well.

Key takeaways
  • 1Huge time saver for first-pass review; lawyers stay accountable.
  • 2Claude models lead on careful reading and calibrated caveats.
  • 3Hallucinated case law remains a real risk: verify every citation.

Recommended setup

A legal platform or frontier model with your playbook in context, used for first-pass review and redlines, with attorney sign-off.

Prompts that work

Contract review against playbook

Review this {{contract_type}} against our playbook: {{playbook}}. For each clause that deviates: quote it, explain the risk, rate severity (high/medium/low), and propose redline language. Note anything missing entirely.

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