Anthropic Claude Fable 5.1 vs Z.ai: GLM Latest: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Anthropic Claude Fable 5.1 (claude-fable-5-1) vs Z.ai: GLM Latest (~z-ai/glm-latest). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Anthropic Claude Fable 5.1 (claude-fable-5-1) — $25,000 Startup Credits & 97.5% 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).
Z.ai: GLM Latest (~z-ai/glm-latest) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Z.ai: GLM Latest: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.0315/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing Anthropic Claude Fable 5.1 (API ID: claude-fable-5-1) vs Z.ai: GLM Latest (API ID: ~z-ai/glm-latest), Z.ai: GLM Latest offers lower standard input pricing at $0.063/1M tokens ($4.4/1M output), while Z.ai: GLM Latest leads in cached prefix economics at $0.0315/1M tokens (50% discount). Z.ai: GLM Latest achieves a 210ms faster P90 time-to-first-token latency (280ms vs 490ms).
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 | Anthropic Claude Fable 5.1 | Z.ai: GLM Latest | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | claude-fable-5-1 | ~z-ai/glm-latest | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $10 / $50 | $0.063 / $4.4 | Z.ai: GLM Latest |
| Cache Read Price (per 1M) | $0.25/1M (97.5% Off) | $0.0315/1M (50% Off) | Z.ai: GLM Latest |
| Context Window / Max Output | 1000K In / 128K Out | 1024K In / 128K Out | Anthropic Claude Fable 5.1 |
| P90 First-Token / Edge Latency | 490ms | 280ms | Z.ai: GLM Latest (-210ms) |
Anthropic specialized frontier model for demanding scientific reasoning, OfficeQA leadership, and long-horizon agentic work.
This model always redirects to the latest GLM model from Z.ai.
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 to Z.ai: GLM Latest
This model always redirects to the latest GLM model from Z.ai. Verified P90 latency of 280ms.