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Hermes 3 405B Instruct vs Kimi K2 0905

Detailed technical comparison between Hermes 3 405B Instruct (Nous Research) and Kimi K2 0905 (Moonshot AI). 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 3 405B Instruct: 2 WinsvsKimi K2 0905: 4 Wins
Context Leader

Kimi K2 0905

262,144 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

Kimi K2 0905

$0.60 / MTok
Nous Researchactive

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...

View Hermes 3 405B Instruct Full Specs →
Moonshot AIactive

Kimi K2 0905

Kimi K2 0905 is the September update of [Kimi K2 0711](moonshotai/kimi-k2). It is a large-scale Mixture-of-Experts (MoE) language model developed by Moonshot AI, featuring 1 trillion total parameters with 32...

View Kimi K2 0905 Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationHermes 3 405B InstructKimi K2 0905
ProviderNous ResearchMoonshot AI
Context Window131,072 tokens262,144 tokens🏆
Agent SuitabilityN/AN/A
Time to First Token (TTFT)N/AN/A
Deployment Modelself hostablemanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2024-08-162025-09-04

API Pricing Comparison

Input Price per Million Tokens

Hermes 3 405B Instruct

$1.00

Kimi K2 0905

$0.60

Output Price per Million Tokens

Hermes 3 405B Instruct

$1.00

Kimi K2 0905

$2.50

💡 Cost Ratio: Kimi K2 0905 is 1.7x cheaper per input token than Hermes 3 405B Instruct.

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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
78.8%vs81.0%+2.2% Kimi K2 0905
Hermes 3 405B Instruct
Kimi K2 0905 🏆
HumanEvalPython coding & logic synthesis
77.0%vs79.2%+2.2% Kimi K2 0905
Hermes 3 405B Instruct
Kimi K2 0905 🏆
MATHComplex mathematical problem solving
54.2%vs56.4%+2.2% Kimi K2 0905
Hermes 3 405B Instruct
Kimi K2 0905 🏆
GPQAGraduate-level expert reasoning
39.6%vs38.4%+1.2% Hermes 3 405B Instruct
Hermes 3 405B Instruct 🏆
Kimi K2 0905
HellaSwagCommonsense reasoning and inference
81.8%vs80.6%+1.2% Hermes 3 405B Instruct
Hermes 3 405B Instruct 🏆
Kimi K2 0905
MT-BenchMulti-turn conversation flow quality
8.4%vs8.7%+0.2% Kimi K2 0905
Hermes 3 405B Instruct
Kimi K2 0905 🏆

Hermes 3 405B Instruct Quirks & Gotchas

No developer gotchas reported.

Kimi K2 0905 Quirks & Gotchas

No developer gotchas reported.

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