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GPT-4.1 Nano vs Hermes 3 405B Instruct

Detailed technical comparison between GPT-4.1 Nano (OpenAI) 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.

⚡ Executive Summary & Verdict

Comparison Snapshot

GPT-4.1 Nano: 6 WinsvsHermes 3 405B Instruct: 0 Wins
Context Leader

GPT-4.1 Nano

1,047,576 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

GPT-4.1 Nano

$0.10 / MTok
OpenAIactive

GPT-4.1 Nano

For tasks that demand low latency, GPT‑4.1 nano is the fastest and cheapest model in the GPT-4.1 series. It delivers exceptional performance at a small size with its 1 million...

View GPT-4.1 Nano Full Specs →
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 →

Technical Specifications

🏆 = Superior Spec
SpecificationGPT-4.1 NanoHermes 3 405B Instruct
ProviderOpenAINous Research
Context Window1,047,576 tokens🏆131,072 tokens
Agent SuitabilityN/AN/A
Time to First Token (TTFT)N/AN/A
Deployment Modelmanaged apiself hostable
Production Stabilitybetastable
API AvailableYesYes
Released Date2025-04-142024-08-16

API Pricing Comparison

Input Price per Million Tokens

GPT-4.1 Nano

$0.10

Hermes 3 405B Instruct

$1.00

Output Price per Million Tokens

GPT-4.1 Nano

$0.40

Hermes 3 405B Instruct

$1.00

💡 Cost Ratio: GPT-4.1 Nano is 10.0x cheaper per input token than Hermes 3 405B Instruct.

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.

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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
80.4%vs78.8%+1.6% GPT-4.1 Nano
GPT-4.1 Nano 🏆
Hermes 3 405B Instruct
HumanEvalPython coding & logic synthesis
78.6%vs77.0%+1.6% GPT-4.1 Nano
GPT-4.1 Nano 🏆
Hermes 3 405B Instruct
MATHComplex mathematical problem solving
55.8%vs54.2%+1.6% GPT-4.1 Nano
GPT-4.1 Nano 🏆
Hermes 3 405B Instruct
GPQAGraduate-level expert reasoning
41.2%vs39.6%+1.6% GPT-4.1 Nano
GPT-4.1 Nano 🏆
Hermes 3 405B Instruct
HellaSwagCommonsense reasoning and inference
83.4%vs81.8%+1.6% GPT-4.1 Nano
GPT-4.1 Nano 🏆
Hermes 3 405B Instruct
MT-BenchMulti-turn conversation flow quality
8.6%vs8.4%+0.2% GPT-4.1 Nano
GPT-4.1 Nano 🏆
Hermes 3 405B Instruct

GPT-4.1 Nano Quirks & Gotchas

No developer gotchas reported.

Hermes 3 405B Instruct Quirks & Gotchas

No developer gotchas reported.

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