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Hermes 4 405B vs DeepSeek V3.1

Detailed technical comparison between Hermes 4 405B (Nous Research) and DeepSeek V3.1 (DeepSeek). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.

⚡ Executive Summary & Verdict

Comparison Snapshot

Hermes 4 405B: 0 WinsvsDeepSeek V3.1: 6 Wins
Context Leader

DeepSeek V3.1

163,840 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

DeepSeek V3.1

$0.25 / MTok
Nous Researchactive

Hermes 4 405B

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 deliberate internally with...

View Hermes 4 405B Full Specs →
DeepSeekactive

DeepSeek V3.1

DeepSeek-V3.1 is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes via prompt templates. It extends the DeepSeek-V3 base with a two-phase long-context...

View DeepSeek V3.1 Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationHermes 4 405BDeepSeek V3.1
ProviderNous ResearchDeepSeek
Context Window131,072 tokens163,840 tokens🏆
Agent SuitabilityNot yet benchmarkedNot yet benchmarked
Time to First Token (TTFT)No public TTFT dataNo public TTFT data
Deployment Modelmanaged apiself hostable
Production StabilityStable GA (est.)Stable GA (est.)
API AvailableYesYes
Released Date2025-08-262025-08-21

API Pricing Comparison

Input Price per Million Tokens

Hermes 4 405B

$1.00

DeepSeek V3.1

$0.25

Output Price per Million Tokens

Hermes 4 405B

$3.00

DeepSeek V3.1

$0.95

💡 Cost Ratio: DeepSeek V3.1 is 4.0x cheaper per input token than Hermes 4 405B.

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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.

MMLUGeneral knowledge & multi-task understanding
78.6%vs80.0%+1.4% DeepSeek V3.1
Hermes 4 405B
DeepSeek V3.1 🏆
HumanEvalPython coding & logic synthesis
76.8%vs78.2%+1.4% DeepSeek V3.1
Hermes 4 405B
DeepSeek V3.1 🏆
MATHComplex mathematical problem solving
54.0%vs55.4%+1.4% DeepSeek V3.1
Hermes 4 405B
DeepSeek V3.1 🏆
GPQAGraduate-level expert reasoning
39.4%vs40.8%+1.4% DeepSeek V3.1
Hermes 4 405B
DeepSeek V3.1 🏆
HellaSwagCommonsense reasoning and inference
81.6%vs83.0%+1.4% DeepSeek V3.1
Hermes 4 405B
DeepSeek V3.1 🏆
MT-BenchMulti-turn conversation flow quality
8.4%vs8.6%+0.1% DeepSeek V3.1
Hermes 4 405B
DeepSeek V3.1 🏆

Hermes 4 405B Quirks & Gotchas

No developer gotchas reported.

DeepSeek V3.1 Quirks & Gotchas

No developer gotchas reported.

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