Mistral: Mistral Medium 3 vs xAI Grok 4.7: Live Promos, Pricing, Hidden Fees & Latency
Mistral: Mistral Medium 3 (mistralai/mistral-medium-3) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Mistral: Mistral Medium 3: Activate ephemeral prefix caching to slash input costs by 50% (down to 0.2/1M) or route via asynchronous Batch API for 50% off standard token rates.
xAI Grok 4.7 (x-ai/grok-4.7) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for xAI Grok 4.7: Activate ephemeral prefix caching to slash input costs by 75% (down to 0.5/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing Mistral: Mistral Medium 3 (API ID: mistralai/mistral-medium-3) vs xAI Grok 4.7 (API ID: x-ai/grok-4.7), Mistral: Mistral Medium 3 offers lower standard input pricing at $0.4/1M tokens ($2/1M output), while Mistral: Mistral Medium 3 leads in cached prefix economics at $0.2/1M tokens (50% discount). xAI Grok 4.7 achieves a 150ms faster P90 time-to-first-token latency (130ms vs 280ms).
Auto-discovered via live global telemetry registry.
⚠️ 200K Full-Request Cliff: Prompts >=200,000 tokens (including cached tokens) double to $4.00/$12.00 ($1.00 cache). US regional endpoint adds +10%.
| Specification / FinOps Dimension | Mistral: Mistral Medium 3 | xAI Grok 4.7 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | mistralai/mistral-medium-3 | x-ai/grok-4.7 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.4 / $2 | $2 / $6 | Mistral: Mistral Medium 3 |
| Cache Read Price (per 1M) | $0.2/1M (50% Off) | $0.5/1M (75% Off) | Mistral: Mistral Medium 3 |
| Context Window / Max Output | 128K In / 102K Out | 500K In / 128K Out | xAI Grok 4.7 |
| P90 First-Token / Edge Latency | 280ms | 130ms | xAI Grok 4.7 (-150ms) |
Mistral Medium 3 is a high-performance enterprise-grade language model designed to deliver frontier-level capabilities at significantly reduced operational cost. It balances state-
xAI Grok 4.7 frontier reasoning model: <200K tokens at $2.00/$6.00 (Cache $0.50/1M); >=200K tokens jumps 2x to $4.00/$12.00 (Cache $1.00/1M) for the full request.
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 to xAI Grok 4.7
xAI Grok 4.7 frontier reasoning model: <200K tokens at $2.00/$6.00 (Cache $0.50/1M); >=200K tokens jumps 2x to $4.00/$12.00 (Cache $1.00/1M) for the full request. Verified P90 latency of 130ms.