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
8.1/10Kimi K2.6 (Moonshot)
GPT-5.4-Cyber (OpenAI) vs Kimi K2.6 (Moonshot)
Tier-list head-to-head. Kimi K2.6 (Moonshot) takes the A-tier slot — here's the breakdown.
Last reviewed May 13, 2026· sweep-fresh
Spec sheet
At a glance
| GPT-5.4-Cyber (OpenAI) | Kimi K2.6 (Moonshot) | |
|---|---|---|
| Tier | B-tier | A-tierwin |
| Overall score | 7.2 / 10 | 8.1 / 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… | Agentic coding workflows, tool-use agents, and teams willing to pay hosted-API prices for frontier-tier qua… |
| Last reviewed | 2026-04-19 | 2026-05-13 |
Head-to-head
Score showdown
Rated 1-10 on the same rubric across all 130 tools we cover.
Ease of use+1.0 Kimi K2.6 (Moonshot)
GPT-5.4-Cyber (OpenAI)
5.0
Kimi K2.6 (Moonshot)
6.0
Output quality+0.5 Kimi K2.6 (Moonshot)
GPT-5.4-Cyber (OpenAI)
8.5
Kimi K2.6 (Moonshot)
9.0
Value+1.5 Kimi K2.6 (Moonshot)
GPT-5.4-Cyber (OpenAI)
7.0
Kimi K2.6 (Moonshot)
8.5
Features+1.0 Kimi K2.6 (Moonshot)
GPT-5.4-Cyber (OpenAI)
8.0
Kimi K2.6 (Moonshot)
9.0
Overall+0.9 Kimi K2.6 (Moonshot)
GPT-5.4-Cyber (OpenAI)
7.2
Kimi K2.6 (Moonshot)
8.1
What you'll pay
Pricing snapshot
Look past the headline number -- entry-tier limits drive most cost surprises.
Kimi K2.6 (Moonshot)
Free tier available
- Self-hosted (Free)$0
- API (Moonshot direct, K2.6)$0.60/per 1M input tokens
- API (OpenRouter, K2.6 blended)~$0.95/per 1M input tokens
Benchmark Head-to-Head
Kimi K2.6 (1T/32B active MoE) -- Artificial Analysis Intelligence Index v4.0 score 54 (#1 open-weights, #4 overall as of 2026-04-27). MMLU/GPQA/AIME shown below are K2.5-baseline numbers retained until K2.6-specific third-party runs publish benchmarks — GPT-5.4-Cyber (OpenAI) has no published benchmarks
| Benchmark | Description | Score |
|---|---|---|
| SWE-Bench Pro | 58.6% | |
| MMLU-Pro (K2.5 baseline) | 84.8% | |
| GPQA Diamond (K2.5 baseline) | 80.5% | |
| AIME 2025 (K2.5 baseline) | 91.2% | |
| LiveCodeBench (K2.5 baseline) | 74.1% |
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- ✓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 Kimi K2.6 (Moonshot)if…
A
8.1/10- ✓Easier to learn and use day-to-day -- friendlier onboarding curve
- ✓Better value at the price you'll actually pay (8.5/10 on value)
- ✓More feature surface area for power users who'll use the depth
- ✓Free tier lets you actually try it before paying
- ✓Agentic coding workflows, tool-use agents, and teams willing to pay hosted-API prices for frontier-tier quality with open-weights licensing protection.
Agentic coding workflows, tool-use agents, and teams willing to pay hosted-API prices for frontier-tier quality with open-weights licensing protection.
Visit Kimi K2.6 (Moonshot)Bottom line
The verdict
Kimi K2.6 (Moonshot) edges out GPT-5.4-Cyber (OpenAI) by 0.9 points (8.1 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 Kimi K2.6 (Moonshot)'s strengths, so if those categories are your priority, the lead translates.
On pricing, Kimi K2.6 (Moonshot) 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; Kimi K2.6 (Moonshot) 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 Kimi K2.6 (Moonshot) when agentic coding workflows, tool-use agents, and teams willing to pay hosted-api prices for frontier-tier quality with open-weights licensing protection. The two tools aren't fighting for the same person -- they're aiming at adjacent jobs that occasionally overlap. If you're squarely in Kimi K2.6 (Moonshot)'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: Kimi K2.6 (Moonshot) 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 Kimi K2.6 (Moonshot) review
Tier A · 8.1/10
GPT-5.4-Cyber (OpenAI) alternatives
Other tools in this lane
Kimi K2.6 (Moonshot) alternatives
Other tools in this lane
Compare GPT-5.4-Cyber (OpenAI) vs:Nano Banana 2 (Gemini 3.1 Flash Image)Muse Spark (Meta)Qwen (Alibaba)Seedance 2.0
Compare Kimi K2.6 (Moonshot) vs:Nano Banana 2 (Gemini 3.1 Flash Image)Muse Spark (Meta)Qwen (Alibaba)Seedance 2.0
Built from our daily AI-tool sweep, last touched May 13, 2026. Honest tier-list reviews — no affiliate-link pieces disguised as advice. See the rubric or how we review.