Mistral: Mistral Medium 3.1 (batch) vs Inception: Mercury 3: Live Promos, Pricing, Hidden Fees & Latency
Mistral: Mistral Medium 3.1 (batch) (mistralai/mistral-medium-3.1:batch) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Mistral: Mistral Medium 3.1 (batch): Activate ephemeral prefix caching to slash input costs by 50% (down to 0.1/1M) or route via asynchronous Batch API for 50% off standard token rates.
Inception: Mercury 3 (inception/mercury-3) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Inception: Mercury 3: Activate ephemeral prefix caching to slash input costs by 50% (down to 0.05/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing Mistral: Mistral Medium 3.1 (batch) (API ID: mistralai/mistral-medium-3.1:batch) vs Inception: Mercury 3 (API ID: inception/mercury-3), Inception: Mercury 3 offers lower standard input pricing at $0.1/1M tokens ($0.35/1M output), while Inception: Mercury 3 leads in cached prefix economics at $0.05/1M tokens (50% discount). Mistral: Mistral Medium 3.1 (batch) 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 | Mistral: Mistral Medium 3.1 (batch) | Inception: Mercury 3 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | mistralai/mistral-medium-3.1:batch | inception/mercury-3 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.2 / $1 | $0.1 / $0.35 | Inception: Mercury 3 |
| Cache Read Price (per 1M) | $0.1/1M (50% Off) | $0.05/1M (50% Off) | Inception: Mercury 3 |
| Context Window / Max Output | 128K In / 102K Out | 977K In / 128K Out | Inception: Mercury 3 |
| P90 First-Token / Edge Latency | 280ms | 280ms | Mistral: Mistral Medium 3.1 (batch) (-0ms) |
Mistral Medium 3.1 is an updated version of Mistral Medium 3, which is a high-performance enterprise-grade language model designed to deliver frontier-level capabilities at signifi
Mercury 3 is a diffusion-based language model from Inception, and the lab's most capable model to date. It is suited for agentic workflows and real-time applications where latency
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 Mistral: Mistral Medium 3.1 (batch) to Inception: Mercury 3
Mercury 3 is a diffusion-based language model from Inception, and the lab's most capable model to date. It is suited for agentic workflows and real-time applications where latency Verified P90 latency of 280ms.