Anthropic: Claude Fable 5.1 (batch) vs Sakana: Sakana Namazu: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Anthropic: Claude Fable 5.1 (batch) (anthropic/claude-fable-5.1:batch) vs Sakana: Sakana Namazu (sakana/sakana-namazu). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Anthropic: Claude Fable 5.1 (batch) (anthropic/claude-fable-5.1:batch) — $25,000 Startup Credits & 50% Cache Promo
Anthropic's Q4 2026 developer promotion combines $25,000 in Claude API credits for early-stage builders with a permanent 20% base price reduction on Opus 5.5 ($4/$20), 0.05x ($0.20/1M) prompt cache reads, and 50% off Batch API processing ($2/$10 with 300K max output).
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.
In Etuki October 2026 FinOps telemetry comparing Anthropic: Claude Fable 5.1 (batch) (API ID: anthropic/claude-fable-5.1:batch) vs Sakana: Sakana Namazu (API ID: sakana/sakana-namazu), 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). Anthropic: Claude Fable 5.1 (batch) 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 | Anthropic: Claude Fable 5.1 (batch) | Sakana: Sakana Namazu | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | anthropic/claude-fable-5.1:batch | sakana/sakana-namazu | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $5 / $25 | $0.95 / $4 | Sakana: Sakana Namazu |
| Cache Read Price (per 1M) | $2.5/1M (50% Off) | $0.475/1M (50% Off) | Sakana: Sakana Namazu |
| Context Window / Max Output | 977K In / 125K Out | 256K In / 64K Out | Anthropic: Claude Fable 5.1 (batch) |
| P90 First-Token / Edge Latency | 280ms | 280ms | Anthropic: Claude Fable 5.1 (batch) (-0ms) |
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, fro
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
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 Anthropic: Claude Fable 5.1 (batch) to Sakana: Sakana Namazu
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 Verified P90 latency of 280ms.