Z.ai: GLM 5.3 FlashX vs Mistral: Mistral Small 4: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Z.ai: GLM 5.3 FlashX (z-ai/glm-5.3-flashx) vs Mistral: Mistral Small 4 (mistralai/mistral-small-2603). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Z.ai: GLM 5.3 FlashX (z-ai/glm-5.3-flashx) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Z.ai: GLM 5.3 FlashX: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.185/1M) or route via asynchronous Batch API for 50% off standard token rates.
Mistral: Mistral Small 4 (mistralai/mistral-small-2603) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Mistral: Mistral Small 4: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.075/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing Z.ai: GLM 5.3 FlashX (API ID: z-ai/glm-5.3-flashx) vs Mistral: Mistral Small 4 (API ID: mistralai/mistral-small-2603), Mistral: Mistral Small 4 offers lower standard input pricing at $0.15/1M tokens ($0.6/1M output), while Mistral: Mistral Small 4 leads in cached prefix economics at $0.075/1M tokens (50% discount). Z.ai: GLM 5.3 FlashX 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 | Z.ai: GLM 5.3 FlashX | Mistral: Mistral Small 4 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | z-ai/glm-5.3-flashx | mistralai/mistral-small-2603 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.37 / $1.25 | $0.15 / $0.6 | Mistral: Mistral Small 4 |
| Cache Read Price (per 1M) | $0.185/1M (50% Off) | $0.075/1M (50% Off) | Mistral: Mistral Small 4 |
| Context Window / Max Output | 1024K In / 128K Out | 256K In / 205K Out | Mistral: Mistral Small 4 |
| P90 First-Token / Edge Latency | 280ms | 280ms | Z.ai: GLM 5.3 FlashX (-0ms) |
GLM-5.3-FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash, a native multimodal model delivering inference speeds of up to 200 tokens/s. Built on the same hybrid sparse and l
Mistral Small 4 is the next major release in the Mistral Small family, unifying the capabilities of several flagship Mistral models into a single system. It combines strong reasoni
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 Z.ai: GLM 5.3 FlashX to Mistral: Mistral Small 4
Mistral Small 4 is the next major release in the Mistral Small family, unifying the capabilities of several flagship Mistral models into a single system. It combines strong reasoni Verified P90 latency of 280ms.