Openrouter Verified Endpoint 556 vs Meta: Muse Spark Open: Live Promos, Pricing, Hidden Fees & Latency
Openrouter Verified Endpoint 556 (openrouter-verified-endpoint-556) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Openrouter Verified Endpoint 556: Activate ephemeral prefix caching to slash input costs by 95% (down to 0.2/1M) or route via asynchronous Batch API for 50% off standard token rates.
Meta: Muse Spark Open (meta/muse-spark-open) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Meta: Muse Spark Open: Activate ephemeral prefix caching to slash input costs by 50% (down to 0.625/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing Openrouter Verified Endpoint 556 (API ID: openrouter-verified-endpoint-556) vs Meta: Muse Spark Open (API ID: meta/muse-spark-open), Openrouter Verified Endpoint 556 offers lower standard input pricing at $0.8/1M tokens ($3.2/1M output), while Openrouter Verified Endpoint 556 leads in cached prefix economics at $0.2/1M tokens (95% discount). Openrouter Verified Endpoint 556 achieves a 135ms faster P90 time-to-first-token latency (145ms vs 280ms).
Route high-volume requests through Prompt Caching (75% off) and asynchronous Batch API (50% off) to prevent token burn spikes.
Auto-discovered via live global telemetry registry.
| Specification / FinOps Dimension | Openrouter Verified Endpoint 556 | Meta: Muse Spark Open | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openrouter-verified-endpoint-556 | meta/muse-spark-open | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.8 / $3.2 | $1.25 / $4.25 | Openrouter Verified Endpoint 556 |
| Cache Read Price (per 1M) | $0.2/1M (95% Off) | $0.625/1M (50% Off) | Openrouter Verified Endpoint 556 |
| Context Window / Max Output | 1050K In / 128K Out | 1024K In / 922K Out | Meta: Muse Spark Open |
| P90 First-Token / Edge Latency | 145ms | 280ms | Openrouter Verified Endpoint 556 (-135ms) |
Openrouter Verified Endpoint 556 production API endpoint verified by Etuki FinOps Telemetry with automated prefix caching and multi-region fallback routing.
Muse Spark Open is a coding-optimized open-weight model. Trained specifically for agentic coding workflows, it delivers higher first-attempt accuracy, reliable tool calling, and de
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 Openrouter Verified Endpoint 556 to Meta: Muse Spark Open
Muse Spark Open is a coding-optimized open-weight model. Trained specifically for agentic coding workflows, it delivers higher first-attempt accuracy, reliable tool calling, and de Verified P90 latency of 280ms.