Anthropic: Claude Sonnet 5.5 vs DeepSeek: DeepSeek V3 0324: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Anthropic: Claude Sonnet 5.5 (anthropic/claude-sonnet-5.5) vs DeepSeek: DeepSeek V3 0324 (deepseek/deepseek-chat-v3-0324). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Anthropic: Claude Sonnet 5.5 (anthropic/claude-sonnet-5.5) — $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).
DeepSeek: DeepSeek V3 0324 (deepseek/deepseek-chat-v3-0324) — Automatic Disk KV Cache ($0.145/1M) & 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.
In Etuki October 2026 FinOps telemetry comparing Anthropic: Claude Sonnet 5.5 (API ID: anthropic/claude-sonnet-5.5) vs DeepSeek: DeepSeek V3 0324 (API ID: deepseek/deepseek-chat-v3-0324), DeepSeek: DeepSeek V3 0324 offers lower standard input pricing at $0.29/1M tokens ($1.14/1M output), while DeepSeek: DeepSeek V3 0324 leads in cached prefix economics at $0.145/1M tokens (50% discount). Anthropic: Claude Sonnet 5.5 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 Sonnet 5.5 | DeepSeek: DeepSeek V3 0324 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | anthropic/claude-sonnet-5.5 | deepseek/deepseek-chat-v3-0324 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $2 / $10 | $0.29 / $1.14 | DeepSeek: DeepSeek V3 0324 |
| Cache Read Price (per 1M) | $1/1M (50% Off) | $0.145/1M (50% Off) | DeepSeek: DeepSeek V3 0324 |
| Context Window / Max Output | 977K In / 125K Out | 160K In / 113K Out | Anthropic: Claude Sonnet 5.5 |
| P90 First-Token / Edge Latency | 280ms | 280ms | Anthropic: Claude Sonnet 5.5 (-0ms) |
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fix
DeepSeek V3, a 685B-parameter, mixture-of-experts model, is the latest iteration of the flagship chat model family from the DeepSeek team. It succeeds the [DeepSeek V3](/deepseek/d
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 Sonnet 5.5 to DeepSeek: DeepSeek V3 0324
DeepSeek V3, a 685B-parameter, mixture-of-experts model, is the latest iteration of the flagship chat model family from the DeepSeek team. It succeeds the [DeepSeek V3](/deepseek/d Verified P90 latency of 280ms.