Nous: Hermes 4 405B vs Nous: Hermes 3 70B Instruct: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Nous: Hermes 4 405B (nousresearch/hermes-4-405b) vs Nous: Hermes 3 70B Instruct (nousresearch/hermes-3-llama-3.1-70b). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Nous: Hermes 4 405B (nousresearch/hermes-4-405b) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Nous: Hermes 4 405B: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.5/1M) or route via asynchronous Batch API for 50% off standard token rates.
Nous: Hermes 3 70B Instruct (nousresearch/hermes-3-llama-3.1-70b) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Nous: Hermes 3 70B Instruct: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.35/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing Nous: Hermes 4 405B (API ID: nousresearch/hermes-4-405b) vs Nous: Hermes 3 70B Instruct (API ID: nousresearch/hermes-3-llama-3.1-70b), Nous: Hermes 3 70B Instruct offers lower standard input pricing at $0.7/1M tokens ($0.7/1M output), while Nous: Hermes 3 70B Instruct leads in cached prefix economics at $0.35/1M tokens (50% discount). Nous: Hermes 4 405B 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 | Nous: Hermes 4 405B | Nous: Hermes 3 70B Instruct | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | nousresearch/hermes-4-405b | nousresearch/hermes-3-llama-3.1-70b | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $1 / $3 | $0.7 / $0.7 | Nous: Hermes 3 70B Instruct |
| Cache Read Price (per 1M) | $0.5/1M (50% Off) | $0.35/1M (50% Off) | Nous: Hermes 3 70B Instruct |
| Context Window / Max Output | 128K In / 115K Out | 128K In / 16K Out | Nous: Hermes 4 405B |
| P90 First-Token / Edge Latency | 280ms | 280ms | Nous: Hermes 4 405B (-0ms) |
Hermes 4 is a large-scale reasoning model built on Meta-Llama-3.1-405B and released by Nous Research. It introduces a hybrid reasoning mode, where the model can choose to deliberat
Hermes 3 is a generalist language model with many improvements over [Hermes 2](/models/nousresearch/nous-hermes-2-mistral-7b-dpo), including advanced agentic capabilities, much bet
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 Nous: Hermes 4 405B to Nous: Hermes 3 70B Instruct
Hermes 3 is a generalist language model with many improvements over [Hermes 2](/models/nousresearch/nous-hermes-2-mistral-7b-dpo), including advanced agentic capabilities, much bet Verified P90 latency of 280ms.