Anthropic Claude Opus 5.5 vs Google: Gemini 3.1 Pro Preview: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Anthropic Claude Opus 5.5 (claude-opus-5-5) vs Google: Gemini 3.1 Pro Preview (google/gemini-3.1-pro-preview). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Claude for Startups Program ($25,000 API Credits) & 95% Off Ephemeral Cache Reads
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).
Google: Gemini 3.1 Pro Preview (google/gemini-3.1-pro-preview) — Google AI Startup Credits ($350K) & 50% Cache Promo
Google DeepMind is currently subsidizing Gemini 4 Argon at 50% off standard rates ($2.00/1M input & $10.00/1M output instead of $4/$20) until November 30, 2026, alongside 95% off Context Caching ($0.10/1M) and up to $350,000 in Google for Startups Cloud/Vertex AI credits.
In Etuki October 2026 FinOps telemetry comparing Anthropic Claude Opus 5.5 (API ID: claude-opus-5-5) vs Google: Gemini 3.1 Pro Preview (API ID: google/gemini-3.1-pro-preview), Google: Gemini 3.1 Pro Preview offers lower standard input pricing at $2/1M tokens ($12/1M output), while Anthropic Claude Opus 5.5 leads in cached prefix economics at $0.2/1M tokens (95% discount). Google: Gemini 3.1 Pro Preview achieves a 70ms faster P90 time-to-first-token latency (280ms vs 350ms).
Adaptive thinking is always on; high effort generates ~119K thinking tokens/task. Fast mode costs $8/$40; inference_geo:"us" adds +10%.
Auto-discovered via live global telemetry registry.
| Specification / FinOps Dimension | Anthropic Claude Opus 5.5 | Google: Gemini 3.1 Pro Preview | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | claude-opus-5-5 | google/gemini-3.1-pro-preview | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $4 / $20 | $2 / $12 | Google: Gemini 3.1 Pro Preview |
| Cache Read Price (per 1M) | $0.2/1M (95% Off) | $1/1M (50% Off) | Anthropic Claude Opus 5.5 |
| Context Window / Max Output | 1000K In / 128K Out | 1024K In / 64K Out | Anthropic Claude Opus 5.5 |
| P90 First-Token / Edge Latency | 350ms | 280ms | Google: Gemini 3.1 Pro Preview (-70ms) |
Ranked #1 on Artificial Analysis Intelligence Index (Score 58). Cuts Opus 5 pricing by 20% and features 0.05x ($0.20/1M) cache reads.
Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage acro
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 Google: Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage acro Verified P90 latency of 280ms.