Hermes 3 405B Instruct vs o3 Pro
Detailed technical comparison between Hermes 3 405B Instruct (Nous Research) and o3 Pro (OpenAI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.
Comparison Snapshot
o3 Pro
200,000 tokensTie
Equal CapabilityTie
Equal SpeedHermes 3 405B Instruct
$1.00 / MTokHermes 3 405B Instruct
Hermes 3 is a generalist language model with many improvements over Hermes 2, including advanced agentic capabilities, much better roleplaying, reasoning, multi-turn conversation, long context coherence, and improvements across the...
o3 Pro
The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and provide consistently...
Technical Specifications
🏆 = Superior Spec| Specification | Hermes 3 405B Instruct | o3 Pro |
|---|---|---|
| Provider | Nous Research | OpenAI |
| Context Window | 131,072 tokens | 200,000 tokens🏆 |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | self hostable | managed api |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2024-08-16 | 2025-06-10 |
API Pricing Comparison
Input Price per Million Tokens
Hermes 3 405B Instruct
$1.00
o3 Pro
$20.00
Output Price per Million Tokens
Hermes 3 405B Instruct
$1.00
o3 Pro
$80.00
💡 Cost Ratio: Hermes 3 405B Instruct is 20.0x cheaper per input token than o3 Pro.
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Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.
Benchmark Performance Metrics
Standardized Scores (0–100%)Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.
Hermes 3 405B Instruct Quirks & Gotchas
No developer gotchas reported.
o3 Pro Quirks & Gotchas
No developer gotchas reported.
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