Qwen: Qwen3.5 Plus 2026-04-20 vs xAI: Grok Latest: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Qwen: Qwen3.5 Plus 2026-04-20 (qwen/qwen3.5-plus-20260420) vs xAI: Grok Latest (~x-ai/grok-latest). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Qwen: Qwen3.5 Plus 2026-04-20 (qwen/qwen3.5-plus-20260420) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Qwen: Qwen3.5 Plus 2026-04-20: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.15/1M) or route via asynchronous Batch API for 50% off standard token rates.
xAI: Grok Latest (~x-ai/grok-latest) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for xAI: Grok Latest: Activate ephemeral prefix caching to slash input costs by 50% (down to $1/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing Qwen: Qwen3.5 Plus 2026-04-20 (API ID: qwen/qwen3.5-plus-20260420) vs xAI: Grok Latest (API ID: ~x-ai/grok-latest), Qwen: Qwen3.5 Plus 2026-04-20 offers lower standard input pricing at $0.3/1M tokens ($1.8/1M output), while Qwen: Qwen3.5 Plus 2026-04-20 leads in cached prefix economics at $0.15/1M tokens (50% discount). Qwen: Qwen3.5 Plus 2026-04-20 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 | Qwen: Qwen3.5 Plus 2026-04-20 | xAI: Grok Latest | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | qwen/qwen3.5-plus-20260420 | ~x-ai/grok-latest | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.3 / $1.8 | $2 / $6 | Qwen: Qwen3.5 Plus 2026-04-20 |
| Cache Read Price (per 1M) | $0.15/1M (50% Off) | $1/1M (50% Off) | Qwen: Qwen3.5 Plus 2026-04-20 |
| Context Window / Max Output | 977K In / 64K Out | 488K In / 439K Out | xAI: Grok Latest |
| P90 First-Token / Edge Latency | 280ms | 280ms | Qwen: Qwen3.5 Plus 2026-04-20 (-0ms) |
Qwen3.5 Plus (April 2026) is a large-scale multimodal language model from Alibaba. It accepts text, image, and video input and produces text output, with a 1M token context window.
This model always redirects to the latest Grok model from xAI.
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 Qwen: Qwen3.5 Plus 2026-04-20 to xAI: Grok Latest
This model always redirects to the latest Grok model from xAI. Verified P90 latency of 280ms.