Claude Opus 4.8 (Fast) vs Hermes 3 405B Instruct
Detailed technical comparison between Claude Opus 4.8 (Fast) (Anthropic) and Hermes 3 405B Instruct (Nous Research). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.
Comparison Snapshot
Claude Opus 4.8 (Fast)
1,000,000 tokensTie
Equal CapabilityTie
Equal SpeedHermes 3 405B Instruct
$1.00 / MTokClaude Opus 4.8 (Fast)
Fast-mode variant of [Opus 4.8](/anthropic/claude-opus-4.8) - identical capabilities with higher output speed at 2x pricing relative to regular Opus 4.8. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
Hermes 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...
Technical Specifications
🏆 = Superior Spec| Specification | Claude Opus 4.8 (Fast) | Hermes 3 405B Instruct |
|---|---|---|
| Provider | Anthropic | Nous Research |
| Context Window | 1,000,000 tokens🏆 | 131,072 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | self hostable |
| Production Stability | beta | stable |
| API Available | Yes | Yes |
| Released Date | 2026-05-27 | 2024-08-16 |
API Pricing Comparison
Input Price per Million Tokens
Claude Opus 4.8 (Fast)
$10.00
Hermes 3 405B Instruct
$1.00
Output Price per Million Tokens
Claude Opus 4.8 (Fast)
$50.00
Hermes 3 405B Instruct
$1.00
💡 Cost Ratio: Hermes 3 405B Instruct is 10.0x cheaper per input token than Claude Opus 4.8 (Fast).
Want to test both models live?
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.
Claude Opus 4.8 (Fast) Quirks & Gotchas
No developer gotchas reported.
Hermes 3 405B Instruct Quirks & Gotchas
No developer gotchas reported.
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