OpenAI GPT-5.6 Cyber vs StepFun: Step 5 Preview: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing OpenAI GPT-5.6 Cyber (gpt-5.6-cyber) vs StepFun: Step 5 Preview (stepfun/step-5-preview). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
OpenAI GPT-5.6 Cyber (gpt-5.6-cyber) Startup Credits & Batch API 50% Off Promo
OpenAI GPT-6.1 Sol ($2/$10 base rate) qualifies for immediate 75% automatic prefix caching ($0.50/1M), 50% off 24-hour Batch API completions ($1/$5), and up to $150,000 in OpenAI/Azure Foundry credits via Microsoft for Startups Founders Hub (no VC funding required for initial tiers).
StepFun: Step 5 Preview (stepfun/step-5-preview) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for StepFun: Step 5 Preview: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.5/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing OpenAI GPT-5.6 Cyber (API ID: gpt-5.6-cyber) vs StepFun: Step 5 Preview (API ID: stepfun/step-5-preview), StepFun: Step 5 Preview offers lower standard input pricing at $1/1M tokens ($2.7/1M output), while StepFun: Step 5 Preview leads in cached prefix economics at $0.5/1M tokens (50% discount). StepFun: Step 5 Preview achieves a 130ms faster P90 time-to-first-token latency (280ms vs 410ms).
Enable Prompt Context Caching & Batch API to reduce repeated system prompt input token burn by 50%-97.5%.
Auto-discovered via live global telemetry registry.
| Specification / FinOps Dimension | OpenAI GPT-5.6 Cyber | StepFun: Step 5 Preview | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | gpt-5.6-cyber | stepfun/step-5-preview | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $12.5 / $75 | $1 / $2.7 | StepFun: Step 5 Preview |
| Cache Read Price (per 1M) | $6.25/1M (50% Off) | $0.5/1M (50% Off) | StepFun: Step 5 Preview |
| Context Window / Max Output | 400K In / 128K Out | 1024K In / 63K Out | OpenAI GPT-5.6 Cyber |
| P90 First-Token / Edge Latency | 410ms | 280ms | StepFun: Step 5 Preview (-130ms) |
Specialized offensive/defensive cybersecurity and zero-day vulnerability auditing model.
Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in softwar
Real-Time Stack Cost & Hidden-Fee Simulator (MAU / Token / Egress / GMV)
Calibrated with Reddit r/FinOps & r/devops telemetry: Includes Context Caching, Bandwidth Egress, and MoR Tax
🛰️Switch from OpenAI GPT-5.6 Cyber to StepFun: Step 5 Preview
Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in softwar Verified P90 latency of 280ms.