Gemini 3 Pro vs Grok 4 for legal writing: which is better in 2026?
A head-to-head look at Gemini 3 Pro and Grok 4 for legal writing. Benchmarks via artificialanalysis.ai, pricing as of May 2026. Compare AI models like these inside Admix.
Quick verdict
For legal writing in May 2026, Gemini 3 Pro edges out Grok 4 on the contextWindow metric. Largest context for ingesting full case files at once.
Side-by-side specs
| Spec | Gemini | Grok |
|---|---|---|
| Intelligence index | 75.6 | 73.9 |
| Coding index | 73.4 | 70.2 |
| Context window | 2M tokens | 256K tokens |
| Speed (tok/s) | 165 | 198 |
| Input $/M | $2.50 | $3.00 |
| Output $/M | $10.00 | $15.00 |
| Released | Feb 12, 2026 | Jan 22, 2026 |
How they handle legal writing
Gemini 3 Pro: Largest context for ingesting full case files at once.
Grok 4: Fastest tokens per second among flagships. The main caveat is behind on coding benchmarks.
Cost per 1,000 queries
Assuming 1,500 input and 800 output tokens per query:
- Gemini 3 Pro: $11.75 per 1,000 queries
- Grok 4: $16.50 per 1,000 queries
Verdict by sub-task
- Best raw quality on legal writing:
- Best price: Gemini 3 Pro
- Longest context: Gemini 3 Pro
- Fastest: Grok 4
FAQ
Is Gemini 3 Pro better than Grok 4 for legal writing?
On May 2026 benchmarks (artificialanalysis.ai), Gemini 3 Pro ranks higher than Grok 4 for legal writing on the contextWindow metric. The gap is small enough that the choice often comes down to price, context length, and tone.
Which is cheaper, Gemini 3 Pro or Grok 4?
Gemini 3 Pro costs $2.50 input and $10.00 output per million tokens. Grok 4 costs $3.00 input and $15.00 output per million tokens.
Can I use both Gemini and Grok in one app?
Yes. Admix is a multi model AI chat aggregator that lets you run Gemini 3 Pro and Grok 4 side by side under one subscription.
Sources
Benchmarks from artificialanalysis.ai (May 2026).
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