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Hermes 3 405B Instruct vs Step 3.7 Flash

Detailed technical comparison between Hermes 3 405B Instruct (Nous Research) and Step 3.7 Flash (StepFun). 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: 0 WinsvsStep 3.7 Flash: 6 Wins
Context Leader

Step 3.7 Flash

262,144 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

Step 3.7 Flash

$0.20 / 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 →
StepFunactive

Step 3.7 Flash

Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters...

View Step 3.7 Flash Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationHermes 3 405B InstructStep 3.7 Flash
ProviderNous ResearchStepFun
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 Date2024-08-162026-05-28

API Pricing Comparison

Input Price per Million Tokens

Hermes 3 405B Instruct

$1.00

Step 3.7 Flash

$0.20

Output Price per Million Tokens

Hermes 3 405B Instruct

$1.00

Step 3.7 Flash

$1.15

💡 Cost Ratio: Step 3.7 Flash is 5.0x 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
78.8%vs84.5%+5.7% Step 3.7 Flash
Hermes 3 405B Instruct
Step 3.7 Flash 🏆
HumanEvalPython coding & logic synthesis
77.0%vs86.0%+9.0% Step 3.7 Flash
Hermes 3 405B Instruct
Step 3.7 Flash 🏆
MATHComplex mathematical problem solving
54.2%vs66.8%+12.6% Step 3.7 Flash
Hermes 3 405B Instruct
Step 3.7 Flash 🏆
GPQAGraduate-level expert reasoning
39.6%vs44.0%+4.4% Step 3.7 Flash
Hermes 3 405B Instruct
Step 3.7 Flash 🏆
HellaSwagCommonsense reasoning and inference
81.8%vs85.8%+4.0% Step 3.7 Flash
Hermes 3 405B Instruct
Step 3.7 Flash 🏆
MT-BenchMulti-turn conversation flow quality
8.4%vs8.9%+0.5% Step 3.7 Flash
Hermes 3 405B Instruct
Step 3.7 Flash 🏆

Hermes 3 405B Instruct Quirks & Gotchas

No developer gotchas reported.

Step 3.7 Flash Quirks & Gotchas

No developer gotchas reported.

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