Perplexity: Sonar Pro Search vs Mistral: Mistral Medium 3.5: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Perplexity: Sonar Pro Search (perplexity/sonar-pro-search) vs Mistral: Mistral Medium 3.5 (mistralai/mistral-medium-3-5). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
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.
Mistral: Mistral Medium 3.5 (mistralai/mistral-medium-3-5) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Mistral: Mistral Medium 3.5: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.75/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing Perplexity: Sonar Pro Search (API ID: perplexity/sonar-pro-search) vs Mistral: Mistral Medium 3.5 (API ID: mistralai/mistral-medium-3-5), Mistral: Mistral Medium 3.5 offers lower standard input pricing at $1.5/1M tokens ($7.5/1M output), while Mistral: Mistral Medium 3.5 leads in cached prefix economics at $0.75/1M tokens (50% discount). Perplexity: Sonar Pro Search 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 | Perplexity: Sonar Pro Search | Mistral: Mistral Medium 3.5 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | perplexity/sonar-pro-search | mistralai/mistral-medium-3-5 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $3 / $15 | $1.5 / $7.5 | Mistral: Mistral Medium 3.5 |
| Cache Read Price (per 1M) | $1.5/1M (50% Off) | $0.75/1M (50% Off) | Mistral: Mistral Medium 3.5 |
| Context Window / Max Output | 195K In / 8K Out | 256K In / 205K Out | Mistral: Mistral Medium 3.5 |
| P90 First-Token / Edge Latency | 280ms | 280ms | Perplexity: Sonar Pro Search (-0ms) |
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.
Mistral Medium 3.5 is a dense 128B instruction-following model from Mistral AI. It supports text and image inputs with text output, and is designed for agentic workflows, coding, a
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 Perplexity: Sonar Pro Search to Mistral: Mistral Medium 3.5
Mistral Medium 3.5 is a dense 128B instruction-following model from Mistral AI. It supports text and image inputs with text output, and is designed for agentic workflows, coding, a Verified P90 latency of 280ms.