Anthropic Claude Sonnet 5.5 vs Meta Llama 4 Scout: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Anthropic Claude Sonnet 5.5 (claude-sonnet-5-5) vs Meta Llama 4 Scout (llama-4-scout). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Sonnet 5.5 High-Velocity Coding Promo: $0.10/1M Cached Input & $1/$5 Batch Tier
Anthropic's September/October 2026 rollout prices Claude Sonnet 5.5 at half of Opus 5.5 ($2/$10) while activating $0.10/1M (0.05x) cached input reads and $1.00/$5.00 asynchronous batch processing.
Meta Llama 4 Scout (llama-4-scout) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Meta Llama 4 Scout: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.225/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing Anthropic Claude Sonnet 5.5 (API ID: claude-sonnet-5-5) vs Meta Llama 4 Scout (API ID: llama-4-scout), Meta Llama 4 Scout offers lower standard input pricing at $0.45/1M tokens ($0.65/1M output), while Anthropic Claude Sonnet 5.5 leads in cached prefix economics at $0.1/1M tokens (95% discount). Meta Llama 4 Scout achieves a 90ms faster P90 time-to-first-token latency (140ms vs 230ms).
Enable Prompt Context Caching & Batch API to reduce repeated system prompt input token burn by 50%-97.5%.
Enable Prompt Context Caching & Batch API to reduce repeated system prompt input token burn by 50%-97.5%.
| Specification / FinOps Dimension | Anthropic Claude Sonnet 5.5 | Meta Llama 4 Scout | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | claude-sonnet-5-5 | llama-4-scout | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $2 / $10 | $0.45 / $0.65 | Meta Llama 4 Scout |
| Cache Read Price (per 1M) | $0.1/1M (95% Off) | $0.225/1M (50% Off) | Anthropic Claude Sonnet 5.5 |
| Context Window / Max Output | 1000K In / 128K Out | 400K In / 128K Out | Anthropic Claude Sonnet 5.5 |
| P90 First-Token / Edge Latency | 230ms | 140ms | Meta Llama 4 Scout (-90ms) |
Released Sept 28, 2026 at half of Opus 5.5 price with 0.05x ($0.10/1M) cache reads for high-speed SWE agents.
Meta open-weight multimodal MoE model supporting 10M+ extended context on dedicated clusters.
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 Anthropic Claude Sonnet 5.5 to Meta Llama 4 Scout
Meta open-weight multimodal MoE model supporting 10M+ extended context on dedicated clusters. Verified P90 latency of 140ms.