DeepSeek: DeepSeek V4 Flash Latest vs Perplexity: Sonar Pro Search: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing DeepSeek: DeepSeek V4 Flash Latest (~deepseek/deepseek-v4-flash-latest) vs Perplexity: Sonar Pro Search (perplexity/sonar-pro-search). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
DeepSeek: DeepSeek V4 Flash Latest (~deepseek/deepseek-v4-flash-latest) — Automatic Disk KV Cache ($0.0072/1M) & 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.
Perplexity: Sonar Pro Search (perplexity/sonar-pro-search) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Perplexity: Sonar Pro Search: Activate ephemeral prefix caching to slash input costs by 50% (down to $1.5/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing DeepSeek: DeepSeek V4 Flash Latest (API ID: ~deepseek/deepseek-v4-flash-latest) vs Perplexity: Sonar Pro Search (API ID: perplexity/sonar-pro-search), DeepSeek: DeepSeek V4 Flash Latest offers lower standard input pricing at $0.0144/1M tokens ($0.576/1M output), while DeepSeek: DeepSeek V4 Flash Latest leads in cached prefix economics at $0.0072/1M tokens (50% discount). DeepSeek: DeepSeek V4 Flash Latest 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 | DeepSeek: DeepSeek V4 Flash Latest | Perplexity: Sonar Pro Search | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | ~deepseek/deepseek-v4-flash-latest | perplexity/sonar-pro-search | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.0144 / $0.576 | $3 / $15 | DeepSeek: DeepSeek V4 Flash Latest |
| Cache Read Price (per 1M) | $0.0072/1M (50% Off) | $1.5/1M (50% Off) | DeepSeek: DeepSeek V4 Flash Latest |
| Context Window / Max Output | 1024K In / 922K Out | 195K In / 8K Out | DeepSeek: DeepSeek V4 Flash Latest |
| P90 First-Token / Edge Latency | 280ms | 280ms | DeepSeek: DeepSeek V4 Flash Latest (-0ms) |
This model always redirects to the latest model in the DeepSeek V4 Flash family.
Exclusively available on the OpenRouter API, Sonar Pro's new Pro Search mode is Perplexity's most advanced agentic search system. It is designed for deeper reasoning and analysis.
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 Latest to Perplexity: Sonar Pro Search
Exclusively available on the OpenRouter API, Sonar Pro's new Pro Search mode is Perplexity's most advanced agentic search system. It is designed for deeper reasoning and analysis. Verified P90 latency of 280ms.