GPT-5.4-Cyber (OpenAI)
No free tier
- Trusted Access for Cyber (TAC) -- gatedNot publicly disclosed
- ChatGPT / API (general-availability GPT-5.4)See chatgpt / chatgpt-pricing
B
7.2/10GPT-5.4-Cyber (OpenAI)
VS
Our pickA
8.0/10DeepSeek
GPT-5.4-Cyber (OpenAI) vs DeepSeek
Tier-list head-to-head. DeepSeek takes the A-tier slot — here's the breakdown.
Last reviewed May 26, 2026· sweep-fresh
Spec sheet
At a glance
| GPT-5.4-Cyber (OpenAI) | DeepSeek | |
|---|---|---|
| Tier | B-tier | A-tierwin |
| Overall score | 7.2 / 10 | 8.0 / 10win |
| Free tier | No | Yeswin |
| Starting price | Not publicly disclosed | $0 |
| Best for | Enterprise SOC teams, established security research orgs, and vetted individual defenders who can qualify f… | Developers and teams who need strong reasoning and coding capabilities on a budget. |
| Last reviewed | 2026-04-19 | 2026-05-26 |
Head-to-head
Score showdown
Rated 1-10 on the same rubric across all 130 tools we cover.
Ease of use+2.5 DeepSeek
GPT-5.4-Cyber (OpenAI)
5.0
DeepSeek
7.5
Output quality+0.5 GPT-5.4-Cyber (OpenAI)
GPT-5.4-Cyber (OpenAI)
8.5
DeepSeek
8.0
Value+2.5 DeepSeek
GPT-5.4-Cyber (OpenAI)
7.0
DeepSeek
9.5
Features+1.0 GPT-5.4-Cyber (OpenAI)
GPT-5.4-Cyber (OpenAI)
8.0
DeepSeek
7.0
Overall+0.8 DeepSeek
GPT-5.4-Cyber (OpenAI)
7.2
DeepSeek
8.0
What you'll pay
Pricing snapshot
Look past the headline number -- entry-tier limits drive most cost surprises.
DeepSeek
Free tier available
- Free$0
- API -- V4-Flash$0.14/$0.28/per 1M tokens input/output
- API -- V4-Pro$0.435/$0.87/per 1M tokens input/output
Benchmark Head-to-Head
DeepSeek V4-Pro (SWE-bench + Arena Elo third-party verified post-launch; knowledge rows are V3.x baseline pending V4 figures) benchmarks — GPT-5.4-Cyber (OpenAI) has no published benchmarks
| Benchmark | Description | Score |
|---|---|---|
| MMLU | Knowledge across 57 subjects | 90.8% |
| MMLU-Pro | Harder multi-subject reasoning | 85% |
| GPQA Diamond | Graduate-level science questions | 79.9% |
| HumanEval | Python code generation | 91.5% |
| SWE-bench | Real GitHub issue fixing | 80.6% |
The decision
Which should you pick?
Use-case anchors and category strengths, side by side.
Pick GPT-5.4-Cyber (OpenAI)if…
B
7.2/10- ✓More feature surface area for power users who'll use the depth
- ✓Enterprise 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.
Enterprise 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)Pick DeepSeekif…
A
8.0/10- ✓Easier to learn and use day-to-day -- friendlier onboarding curve
- ✓Better value at the price you'll actually pay (9.5/10 on value)
- ✓Free tier lets you actually try it before paying
- ✓Developers and teams who need strong reasoning and coding capabilities on a budget.
- ✓If you're building AI features and can't justify GPT-4 API costs, DeepSeek is the obvious first stop.
Developers and teams who need strong reasoning and coding capabilities on a budget. If you're building AI features and can't justify GPT-4 API costs, DeepSeek is the obvious first stop.
Visit DeepSeekBottom line
The verdict
DeepSeek edges out GPT-5.4-Cyber (OpenAI) by 0.8 points (8.0 vs 7.2) -- a A-tier vs B-tier split that's narrow but real. Not a blowout; both belong on a shortlist. The score gap shows up most clearly in the categories that matter for DeepSeek's strengths, so if those categories are your priority, the lead translates.
On pricing, DeepSeek 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. GPT-5.4-Cyber (OpenAI) starts at Not publicly disclosed; DeepSeek starts at $0. Compare what each entry tier actually unlocks before you compare list prices -- the limits matter more than the headline number.
By use case: 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. Pick DeepSeek when developers and teams who need strong reasoning and coding capabilities on a budget. The two tools aren't fighting for the same person -- they're aiming at adjacent jobs that occasionally overlap. If you're squarely in DeepSeek'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: DeepSeek is the safer default for most readers, but GPT-5.4-Cyber (OpenAI) is competitive enough that the tie-breaker is your specific workload, not the spec sheet.
Keep digging
Compare more & explore
Full GPT-5.4-Cyber (OpenAI) review
Tier B · 7.2/10
Full DeepSeek review
Tier A · 8.0/10
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Built from our daily AI-tool sweep, last touched May 26, 2026. Honest tier-list reviews — no affiliate-link pieces disguised as advice. See the rubric or how we review.