DeepSeek: DeepSeek V4 Flash 0731 vs Anthropic Claude Fable 5.1: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing DeepSeek: DeepSeek V4 Flash 0731 (deepseek/deepseek-v4-flash-0731) vs Anthropic Claude Fable 5.1 (claude-fable-5-1). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
DeepSeek: DeepSeek V4 Flash 0731 (deepseek/deepseek-v4-flash-0731) — Automatic Disk KV Cache ($0.008/1M) & Off-Peak Promo
DeepSeek-V4 Pro (1.6T MoE) automatically caches repeated 64-token prompt prefixes on NVMe storage at $0.07/1M input tokens (50% off $0.14 base) with zero code changes required, plus off-peak UTC scheduling discounts.
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).
In Etuki October 2026 FinOps telemetry comparing DeepSeek: DeepSeek V4 Flash 0731 (API ID: deepseek/deepseek-v4-flash-0731) vs Anthropic Claude Fable 5.1 (API ID: claude-fable-5-1), DeepSeek: DeepSeek V4 Flash 0731 offers lower standard input pricing at $0.016/1M tokens ($0.64/1M output), while DeepSeek: DeepSeek V4 Flash 0731 leads in cached prefix economics at $0.008/1M tokens (50% discount). DeepSeek: DeepSeek V4 Flash 0731 achieves a 210ms faster P90 time-to-first-token latency (280ms vs 490ms).
Auto-discovered via live global telemetry registry.
Enable Prompt Context Caching & Batch API to reduce repeated system prompt input token burn by 50%-97.5%.
| Specification / FinOps Dimension | DeepSeek: DeepSeek V4 Flash 0731 | Anthropic Claude Fable 5.1 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | deepseek/deepseek-v4-flash-0731 | claude-fable-5-1 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.016 / $0.64 | $10 / $50 | DeepSeek: DeepSeek V4 Flash 0731 |
| Cache Read Price (per 1M) | $0.008/1M (50% Off) | $0.25/1M (97.5% Off) | DeepSeek: DeepSeek V4 Flash 0731 |
| Context Window / Max Output | 1024K In / 922K Out | 1000K In / 128K Out | DeepSeek: DeepSeek V4 Flash 0731 |
| P90 First-Token / Edge Latency | 280ms | 490ms | DeepSeek: DeepSeek V4 Flash 0731 (-210ms) |
DeepSeek V4 Flash 0731 is a sparse mixture-of-experts model from DeepSeek, with 13B active parameters out of 284B total. This re-post-trained revision is suited for coding, reasoni
Anthropic specialized frontier model for demanding scientific reasoning, OfficeQA leadership, and long-horizon agentic work.
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 DeepSeek: DeepSeek V4 Flash 0731 to Anthropic Claude Fable 5.1
Anthropic specialized frontier model for demanding scientific reasoning, OfficeQA leadership, and long-horizon agentic work. Verified P90 latency of 490ms.