Sakana: Sakana Namazu vs StepFun: Step 5 Preview: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Sakana: Sakana Namazu (sakana/sakana-namazu) vs StepFun: Step 5 Preview (stepfun/step-5-preview). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Sakana: Sakana Namazu (sakana/sakana-namazu) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Sakana: Sakana Namazu: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.475/1M) or route via asynchronous Batch API for 50% off standard token rates.
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 Sakana: Sakana Namazu (API ID: sakana/sakana-namazu) vs StepFun: Step 5 Preview (API ID: stepfun/step-5-preview), Sakana: Sakana Namazu offers lower standard input pricing at $0.95/1M tokens ($4/1M output), while Sakana: Sakana Namazu leads in cached prefix economics at $0.475/1M tokens (50% discount). Sakana: Sakana Namazu achieves a 0ms faster P90 time-to-first-token latency (280ms vs 280ms).
Auto-discovered via live global telemetry registry.
Auto-discovered via live global telemetry registry.
| Specification / FinOps Dimension | Sakana: Sakana Namazu | StepFun: Step 5 Preview | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | sakana/sakana-namazu | stepfun/step-5-preview | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.95 / $4 | $1 / $2.7 | Sakana: Sakana Namazu |
| Cache Read Price (per 1M) | $0.475/1M (50% Off) | $0.5/1M (50% Off) | Sakana: Sakana Namazu |
| Context Window / Max Output | 256K In / 64K Out | 1024K In / 63K Out | Sakana: Sakana Namazu |
| P90 First-Token / Edge Latency | 280ms | 280ms | Sakana: Sakana Namazu (-0ms) |
Sakana Namazu is a Japanese-specialized reasoning model from Sakana AI, based on Kimi K2.6 with additional training for Japanese language and business contexts. It is suited for Ja
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 Sakana: Sakana Namazu 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.