Free Models Router vs Anthropic: Claude Sonnet 5.5 (batch): Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Free Models Router (openrouter/free) vs Anthropic: Claude Sonnet 5.5 (batch) (anthropic/claude-sonnet-5.5:batch). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Free Models Router (openrouter/free) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Free Models Router: Activate ephemeral prefix caching to slash input costs by 50% (down to $0/1M) or route via asynchronous Batch API for 50% off standard token rates.
Anthropic: Claude Sonnet 5.5 (batch) (anthropic/claude-sonnet-5.5:batch) — $25,000 Startup Credits & 50% Cache Promo
Anthropic's Q4 2026 developer promotion combines $25,000 in Claude API credits for early-stage builders with a permanent 20% base price reduction on Opus 5.5 ($4/$20), 0.05x ($0.20/1M) prompt cache reads, and 50% off Batch API processing ($2/$10 with 300K max output).
In Etuki October 2026 FinOps telemetry comparing Free Models Router (API ID: openrouter/free) vs Anthropic: Claude Sonnet 5.5 (batch) (API ID: anthropic/claude-sonnet-5.5:batch), Free Models Router offers lower standard input pricing at $0/1M tokens ($0/1M output), while Free Models Router leads in cached prefix economics at $0/1M tokens (50% discount). Free Models Router 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 | Free Models Router | Anthropic: Claude Sonnet 5.5 (batch) | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openrouter/free | anthropic/claude-sonnet-5.5:batch | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0 / $0 | $1 / $5 | Free Models Router |
| Cache Read Price (per 1M) | $0/1M (50% Off) | $0.5/1M (50% Off) | Free Models Router |
| Context Window / Max Output | 195K In / 64K Out | 977K In / 125K Out | Anthropic: Claude Sonnet 5.5 (batch) |
| P90 First-Token / Edge Latency | 280ms | 280ms | Free Models Router (-0ms) |
The simplest way to get free inference. openrouter/free is a router that selects free models at random from the models available on OpenRouter. The router smartly filters for model
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fix
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 Free Models Router to Anthropic: Claude Sonnet 5.5 (batch)
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fix Verified P90 latency of 280ms.