Anthropic: Claude Sonnet 4 vs OpenAI: GPT-5 Mini (batch): Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Anthropic: Claude Sonnet 4 (anthropic/claude-sonnet-4) vs OpenAI: GPT-5 Mini (batch) (openai/gpt-5-mini:batch). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Anthropic: Claude Sonnet 4 (anthropic/claude-sonnet-4) — $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).
OpenAI: GPT-5 Mini (batch) (openai/gpt-5-mini:batch) Startup Credits & Batch API 50% Off Promo
OpenAI GPT-6.1 Sol ($2/$10 base rate) qualifies for immediate 75% automatic prefix caching ($0.50/1M), 50% off 24-hour Batch API completions ($1/$5), and up to $150,000 in OpenAI/Azure Foundry credits via Microsoft for Startups Founders Hub (no VC funding required for initial tiers).
In Etuki October 2026 FinOps telemetry comparing Anthropic: Claude Sonnet 4 (API ID: anthropic/claude-sonnet-4) vs OpenAI: GPT-5 Mini (batch) (API ID: openai/gpt-5-mini:batch), OpenAI: GPT-5 Mini (batch) offers lower standard input pricing at $0.125/1M tokens ($1/1M output), while OpenAI: GPT-5 Mini (batch) leads in cached prefix economics at $0.0625/1M tokens (50% discount). Anthropic: Claude Sonnet 4 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 Sonnet 4 | OpenAI: GPT-5 Mini (batch) | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | anthropic/claude-sonnet-4 | openai/gpt-5-mini:batch | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $3 / $15 | $0.125 / $1 | OpenAI: GPT-5 Mini (batch) |
| Cache Read Price (per 1M) | $1.5/1M (50% Off) | $0.0625/1M (50% Off) | OpenAI: GPT-5 Mini (batch) |
| Context Window / Max Output | 195K In / 63K Out | 391K In / 125K Out | OpenAI: GPT-5 Mini (batch) |
| P90 First-Token / Edge Latency | 280ms | 280ms | Anthropic: Claude Sonnet 4 (-0ms) |
Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability. Ac
GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks. It provides the same instruction-following and safety-tuning benefits as GPT-5, but wit
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 4 to OpenAI: GPT-5 Mini (batch)
GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks. It provides the same instruction-following and safety-tuning benefits as GPT-5, but wit Verified P90 latency of 280ms.