GPT-5.4-Cyber (OpenAI) vs AI21 Jamba2

Which one should you pick? Here's the full breakdown.

GPT-5.4-Cyber (OpenAI)

B
7.2/10

OpenAI's defensive-cybersecurity variant of GPT-5.4, launched 2026-04-16. Lowered refusal boundary for security-research tasks and native binary reverse-engineering. Access gated via Trusted Access for Cyber (TAC) program -- thousands of verified defenders, hundreds of teams, no public pricing

Our Pick

AI21 Jamba2

A
8.0/10

AI21 Labs' hybrid SSM-Transformer (Mamba-style) open-weight family -- Jamba2 launched 2026-01-08. Two sizes: 3B dense (runs on phones / laptops) and Jamba2 Mini MoE (12B active / 52B total). Apache 2.0, 256K context, mid-trained on 500B tokens

CategoryGPT-5.4-Cyber (OpenAI)AI21 Jamba2
Ease of Use5.06.5
Output Quality8.58.0
Value7.09.0
Features8.08.5
Overall7.28.0

Pricing Comparison

FeatureGPT-5.4-Cyber (OpenAI)AI21 Jamba2
Free TierNoYes
Starting PriceNot publicly disclosed$0

Which Should You Pick?

Pick GPT-5.4-Cyber (OpenAI) if...

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.

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Pick AI21 Jamba2 if...

  • ✓Easier to use (6.5 vs 5)
  • ✓Better value for money (9/10)
  • ✓Has a free tier

Developers building long-context RAG systems (256K context with manageable memory is the sweet spot), mobile/edge deployments where Jamba2 3B's hybrid efficiency shines, and teams that want to experiment with non-transformer architectures while staying in Apache-2.0 territory. Also good for Israeli + EU enterprise procurement where AI21's geography / GDPR posture matters.

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Our Verdict

AI21 Jamba2 edges out GPT-5.4-Cyber (OpenAI) with a 8.0 vs 7.2 overall score. Both are solid picks, but AI21 Jamba2 has the advantage in value.