GPT 5.4 Mini vs Grok 4
Direct comparison between openai and xai for chat models. Specs, prices, strengths, weaknesses — decide on facts.
At a glance
- · Cheaper: GPT 5.4 Mini
- · Longer context window: GPT 5.4 Mini at 400,000 tokens
- · GPT 5.4 Mini: Fraction of GPT-5.4 cost with very similar tool-use quality
- · Grok 4: Only top-tier model with direct access to X realtime data
Spec comparison
| Spec | GPT 5.4 Mini | Grok 4 |
|---|---|---|
| Provider | openai | xai |
| Input per 1M tokens | $0.75 / 1M | $3.00 / 1M |
| Output per 1M tokens | $4.50 / 1M | $15.00 / 1M |
| Context window | 400,000 tok | 256,000 tok |
| Max output | 16,384 tok | 16,384 tok |
| Knowledge cutoff | 2026-01 | — |
| Vision | ||
| Tool calling | ||
| JSON mode | ||
| Structured output | ||
| Reasoning |
GPT 5.4 Mini — strengths
- +Fraction of GPT-5.4 cost with very similar tool-use quality
- +Low latency — good for realtime chat and inline completion
- +Same 400k context window as the full-size model
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
GPT 5.4 Mini — weaknesses
- −No dedicated reasoning mode — complex math degrades
- −On very long tool-call chains, drift detection is weaker
Grok 4 — weaknesses
- −Code generation behind Sonnet 4.6 and GPT-5.4
- −Weaker structured-output guarantees than OpenAI/Anthropic