Grok
Free tier available
- Free$0
- X Premium$8/mo
- X Premium+$40/mo
Our pickGrok

GPT-5.4-Cyber (OpenAI)
Tier-list head-to-head. Grok takes the B-tier slot — here's the breakdown.
Spec sheet
| Tier | B-tierwin | B-tier |
| Overall score | 7.5 / 10win | 7.2 / 10 |
| Free tier | Yeswin | No |
| Starting price | $0 | Not publicly disclosed |
| Best for | People who live on X/Twitter and want an AI that can tap into that data in real-time. | Enterprise SOC teams, established security research orgs, and vetted individual defenders who can qualify f… |
| Last reviewed | 2026-05-14 | 2026-04-19 |
Head-to-head
Rated 1-10 on the same rubric across all 130 tools we cover.
What you'll pay
Look past the headline number -- entry-tier limits drive most cost surprises.
Free tier available
No free tier
Grok 4.20 benchmarks — GPT-5.4-Cyber (OpenAI) has no published benchmarks
| Benchmark | Description | Score |
|---|---|---|
| MMLU | Knowledge across 57 subjects | 88.5% |
| GPQA Diamond | Graduate-level science questions | 85% |
| HumanEval | Python code generation | 90% |
| Humanity's Last Exam | Frontier difficulty questions | 50.7% |
The decision
Use-case anchors and category strengths, side by side.
People who live on X/Twitter and want an AI that can tap into that data in real-time. Also good for users who find mainstream chatbots too sanitized and want something with more personality.
Visit GrokEnterprise SOC teams, established security research orgs, and vetted individual defenders who can qualify for Trusted Access for Cyber. Strongest fit if your work involves binary analysis, vulnerability research, or defensive-security tooling where standard GPT-5.4 refusals actually block the work.
Visit GPT-5.4-Cyber (OpenAI)Bottom line
Grok (B-tier, 7.5/10) and GPT-5.4-Cyber (OpenAI) (B-tier, 7.2/10) are within margin-of-error of each other on overall score. There's no decisive winner -- the right pick comes down to how you'll actually use the tool, not which scored higher in the abstract. We rate them on the same rubric (ease of use, output quality, value, features), and on this pair the rubric is calling it a draw.
On pricing, Grok starts free while GPT-5.4-Cyber (OpenAI) requires a paid plan from day one (Not publicly disclosed+). If you're testing the waters or running an occasional workload, that gap matters more than the score differential. Grok starts at $0; GPT-5.4-Cyber (OpenAI) starts at Not publicly disclosed. Compare what each entry tier actually unlocks before you compare list prices -- the limits matter more than the headline number.
By use case: pick Grok when people who live on x/twitter and want an ai that can tap into that data in real-time. Pick GPT-5.4-Cyber (OpenAI) when enterprise soc teams, established security research orgs, and vetted individual defenders who can qualify for trusted access for cyber. The two tools aren't fighting for the same person -- they're aiming at adjacent jobs that occasionally overlap. If you're squarely in Grok's lane, the tier-list ranking and the use-case fit point the same direction; if you're in GPT-5.4-Cyber (OpenAI)'s lane, the score gap matters less than the fit.
Bottom line: this pair is a coin flip on raw scores. Choose by use-case fit, free-tier availability, and which one you can actually try without committing. Re-evaluate in 60-90 days -- both vendors are shipping fast in 2026.
Keep digging
Full Grok review
Tier B · 7.5/10
Full GPT-5.4-Cyber (OpenAI) review
Tier B · 7.2/10
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Built from our daily AI-tool sweep, last touched May 14, 2026. Honest tier-list reviews — no affiliate-link pieces disguised as advice. See the rubric or how we review.