Gemini 3 Pro vs Grok 4
Direct comparison between google and xai for chat models. Specs, prices, strengths, weaknesses — decide on facts.
At a glance
- · Cheaper: Gemini 3 Pro
- · Longer context window: Gemini 3 Pro at 2,000,000 tokens
- · Gemini 3 Pro: 2M token context — largest window among top-tier models
- · Grok 4: Only top-tier model with direct access to X realtime data
Spec comparison
| Spec | Gemini 3 Pro | Grok 4 |
|---|---|---|
| Provider | xai | |
| Input per 1M tokens | $1.25 / 1M | $3.00 / 1M |
| Output per 1M tokens | $5.00 / 1M | $15.00 / 1M |
| Context window | 2,000,000 tok | 256,000 tok |
| Max output | 65,536 tok | 16,384 tok |
| Knowledge cutoff | 2025-11 | — |
| Vision | ||
| Audio | ||
| Tool calling | ||
| JSON mode | ||
| Structured output | ||
| Reasoning |
Gemini 3 Pro — strengths
- +2M token context — largest window among top-tier models
- +True multimodal input: video, audio, image, text
- +Very strong on structured output and JSON-schema enforcement
Grok 4 — strengths
- +Only top-tier model with direct access to X realtime data
- +Strong reasoning, competitive with o1/o3 on math benchmarks
- +Less refusal bias on political or controversial topics
Gemini 3 Pro — weaknesses
- −Code generation slightly behind Claude Sonnet 4.6 and GPT-5.4
- −At very long contexts, latency becomes significant
Grok 4 — weaknesses
- −Code generation behind Sonnet 4.6 and GPT-5.4
- −Weaker structured-output guarantees than OpenAI/Anthropic