Hermes 3 405B Instruct vs o3 Mini
Detailed technical comparison between Hermes 3 405B Instruct (Nous Research) and o3 Mini (OpenAI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.
Comparison Snapshot
o3 Mini
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 Mini
OpenAI o3-mini is a cost-efficient language model optimized for STEM reasoning tasks, particularly excelling in science, mathematics, and coding. This model supports the `reasoning_effort` parameter, which can be set to...
Technical Specifications
🏆 = Superior Spec| Specification | Hermes 3 405B Instruct | o3 Mini |
|---|---|---|
| Provider | Nous Research | OpenAI |
| Context Window | 131,072 tokens | 200,000 tokens🏆 |
| Agent Suitability | N/A | 91/100 |
| Time to First Token (TTFT) | N/A | 800 ms |
| Deployment Model | self hostable | managed api |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2024-08-16 | 2025-01-31 |
API Pricing Comparison
Input Price per Million Tokens
Hermes 3 405B Instruct
$1.00
o3 Mini
$1.10
Output Price per Million Tokens
Hermes 3 405B Instruct
$1.00
o3 Mini
$4.40
💡 Cost Ratio: Hermes 3 405B Instruct is 1.1x cheaper per input token than o3 Mini.
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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 Mini Quirks & Gotchas
- ▸Best cost/performance ratio for reasoning tasks in the OpenAI lineup
- ▸Still slower than GPT-5 for simple tool calls — route accordingly
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