Author's Description
Hermes 2 Pro is an upgraded, retrained version of Nous Hermes 2, consisting of an updated and cleaned version of the OpenHermes 2.5 Dataset, as well as a newly introduced Function Calling and JSON Mode dataset developed in-house.
Key Specifications
Supported Parameters
This model supports the following parameters:
Features
This model supports the following features:
Performance Summary
NousResearch: Hermes 2 Pro - Llama-3 8B demonstrates strong performance in several key areas. It consistently ranks among the fastest models, placing in the 86th percentile across benchmarks, and offers highly competitive pricing, ranking in the 95th percentile. The model also exhibits exceptional reliability with a 97% success rate, indicating minimal technical failures. In terms of specific benchmarks, Hermes 2 Pro excels in acknowledging uncertainty, achieving 96.0% accuracy in Hallucinations (Baseline) tests, making it the most accurate model at its price point for this category. It also performs well in Ethics (98.0% accuracy) and Email Classification (95.0% accuracy). However, the model shows notable weaknesses in more complex cognitive tasks. Its accuracy in Reasoning (24.0%), Mathematics (48.0%), Instruction Following (38.4%), and Coding (51.0%) benchmarks is comparatively lower, suggesting areas for improvement in advanced problem-solving and precise multi-step instruction execution. General Knowledge is moderate at 91.8%. Overall, Hermes 2 Pro is a cost-effective and reliable model, particularly strong in tasks requiring factual recall and ethical judgment, but less proficient in highly analytical or complex computational challenges.
Model Pricing
Current Pricing
Feature | Price (per 1M tokens) |
---|---|
Prompt | $0.14 |
Completion | $0.14 |
Price History
Available Endpoints
Provider | Endpoint Name | Context Length | Pricing (Input) | Pricing (Output) |
---|---|---|---|---|
Lambda
|
Lambda | nousresearch/hermes-2-pro-llama-3-8b | 131K | $0.025 / 1M tokens | $0.08 / 1M tokens |
Novita
|
Novita | nousresearch/hermes-2-pro-llama-3-8b | 8K | $0.14 / 1M tokens | $0.14 / 1M tokens |
NextBit
|
NextBit | nousresearch/hermes-2-pro-llama-3-8b | 32K | $0.025 / 1M tokens | $0.08 / 1M tokens |
Benchmark Results
Benchmark | Category | Reasoning | Strategy | Free | Executions | Accuracy | Cost | Duration |
---|
Other Models by nousresearch
|
Released | Params | Context |
|
Speed | Ability | Cost |
---|---|---|---|---|---|---|---|
Nous: Hermes 4 70B | Aug 26, 2025 | 70B | 131K |
Text input
Text output
|
★★★★ | ★★★ | $$ |
Nous: Hermes 4 405B | Aug 26, 2025 | 405B | 131K |
Text input
Text output
|
★★★ | ★★★★ | $$$$ |
Nous: DeepHermes 3 Mistral 24B Preview | May 09, 2025 | 24B | 32K |
Text input
Text output
|
★★★★ | ★★★ | $$ |
Nous: DeepHermes 3 Llama 3 8B Preview | Feb 27, 2025 | 8B | 131K |
Text input
Text output
|
— | — | $ |
Nous: Hermes 3 70B Instruct | Aug 17, 2024 | 70B | 12K |
Text input
Text output
|
★★★★ | ★★★ | $$ |
Nous: Hermes 3 405B Instruct | Aug 15, 2024 | 405B | 131K |
Text input
Text output
|
★★★ | ★★★★ | $$$$ |
Nous: Hermes 2 Mixtral 8x7B DPO Unavailable | Jan 15, 2024 | 56B | 32K |
Text input
Text output
|
★★★ | ★★ | $$$$ |