Anthropic: Claude Opus 5.5 vs Anthropic: Claude Sonnet 5: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Anthropic: Claude Opus 5.5 (anthropic/claude-opus-5.5) vs Anthropic: Claude Sonnet 5 (anthropic/claude-sonnet-5). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Anthropic: Claude Opus 5.5 (anthropic/claude-opus-5.5) — $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).
Anthropic: Claude Sonnet 5 (anthropic/claude-sonnet-5) — $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 Anthropic: Claude Opus 5.5 (API ID: anthropic/claude-opus-5.5) vs Anthropic: Claude Sonnet 5 (API ID: anthropic/claude-sonnet-5), Anthropic: Claude Sonnet 5 offers lower standard input pricing at $2/1M tokens ($10/1M output), while Anthropic: Claude Sonnet 5 leads in cached prefix economics at $1/1M tokens (50% discount). Anthropic: Claude Opus 5.5 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 | Anthropic: Claude Opus 5.5 | Anthropic: Claude Sonnet 5 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | anthropic/claude-opus-5.5 | anthropic/claude-sonnet-5 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $4 / $20 | $2 / $10 | Anthropic: Claude Sonnet 5 |
| Cache Read Price (per 1M) | $2/1M (50% Off) | $1/1M (50% Off) | Anthropic: Claude Sonnet 5 |
| Context Window / Max Output | 977K In / 125K Out | 977K In / 125K Out | Anthropic: Claude Opus 5.5 |
| P90 First-Token / Edge Latency | 280ms | 280ms | Anthropic: Claude Opus 5.5 (-0ms) |
Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step chan
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reaso
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 Opus 5.5 to Anthropic: Claude Sonnet 5
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reaso Verified P90 latency of 280ms.