Meta Llama Llama 3.1 405B vs Google Gemini 2.5 Pro: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Meta Llama Llama 3.1 405B (meta-llama/llama-3.1-405b) vs Google Gemini 2.5 Pro (google/gemini-2.5-pro). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Meta Llama Llama 3.1 405B (meta-llama/llama-3.1-405b) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Meta Llama Llama 3.1 405B: Activate ephemeral prefix caching to slash input costs by 90% (down to 0.08/1M) or route via asynchronous Batch API for 50% off standard token rates.
Google Gemini 2.5 Pro (google/gemini-2.5-pro) — Google AI Startup Credits ($350K) & 90% 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 Meta Llama Llama 3.1 405B (API ID: meta-llama/llama-3.1-405b) vs Google Gemini 2.5 Pro (API ID: google/gemini-2.5-pro), Meta Llama Llama 3.1 405B offers lower standard input pricing at $0.8/1M tokens ($0.8/1M output), while Meta Llama Llama 3.1 405B leads in cached prefix economics at $0.08/1M tokens (90% discount). Meta Llama Llama 3.1 405B achieves a 0ms faster P90 time-to-first-token latency (195ms vs 195ms).
Gateway-synced rate ($0.8/$0.8 per 1M, flat 128K window). Verify upstream provider cache TTL and regional routing before high-volume batch runs.
Gateway-synced rate ($1.25/$10 per 1M, flat 1049K window). Verify upstream provider cache TTL and regional routing before high-volume batch runs.
| Specification / FinOps Dimension | Meta Llama Llama 3.1 405B | Google Gemini 2.5 Pro | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | meta-llama/llama-3.1-405b | google/gemini-2.5-pro | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.8 / $0.8 | $1.25 / $10 | Meta Llama Llama 3.1 405B |
| Cache Read Price (per 1M) | $0.08/1M (90% Off) | $0.125/1M (90% Off) | Meta Llama Llama 3.1 405B |
| Context Window / Max Output | 128K In / 64K Out | 1049K In / 64K Out | Meta Llama Llama 3.1 405B |
| P90 First-Token / Edge Latency | 195ms | 195ms | Meta Llama Llama 3.1 405B (-0ms) |
Meta Llama Llama 3.1 405B (meta-llama/llama-3.1-405b): OpenRouter gateway-synced model at $0.8/1M input, $0.8/1M output, $0.08/1M cached input (128K context window).
Google Gemini 2.5 Pro (google/gemini-2.5-pro): OpenRouter gateway-synced model at $1.25/1M input, $10/1M output, $0.125/1M cached input (1049K context window).
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 Meta Llama Llama 3.1 405B to Google Gemini 2.5 Pro
Google Gemini 2.5 Pro (google/gemini-2.5-pro): OpenRouter gateway-synced model at $1.25/1M input, $10/1M output, $0.125/1M cached input (1049K context window). Verified P90 latency of 195ms.