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Hermes 4 405B vs Nano Banana 2 (Gemini 3.1 Flash Image)

Detailed technical comparison between Hermes 4 405B (Nous Research) and Nano Banana 2 (Gemini 3.1 Flash Image) (Google). 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: 6 WinsvsNano Banana 2 (Gemini 3.1 Flash Image): 0 Wins
Context Leader

Tie

Equal Capacity
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

Nano Banana 2 (Gemini 3.1 Flash Image)

$0.50 / 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 β†’
Googleactive

Nano Banana 2 (Gemini 3.1 Flash Image)

Gemini 3.1 Flash Image, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines advanced...

View Nano Banana 2 (Gemini 3.1 Flash Image) Full Specs β†’

Technical Specifications

πŸ† = Superior Spec
SpecificationHermes 4 405BNano Banana 2 (Gemini 3.1 Flash Image)
ProviderNous ResearchGoogle
Context Window131,072 tokens131,072 tokens
Agent SuitabilityNot yet benchmarkedNot yet benchmarked
Time to First Token (TTFT)No public TTFT dataNo public TTFT data
Deployment Modelmanaged apimanaged api
Production StabilityStable GA (est.)Stable GA (est.)
API AvailableYesYes
Released Date2025-08-262026-06-18

API Pricing Comparison

Input Price per Million Tokens

Hermes 4 405B

$1.00

Nano Banana 2 (Gemini 3.1 Flash Image)

$0.50

Output Price per Million Tokens

Hermes 4 405B

$3.00

Nano Banana 2 (Gemini 3.1 Flash Image)

$3.00

πŸ’‘ Cost Ratio: Nano Banana 2 (Gemini 3.1 Flash Image) is 2.0x cheaper per input token than Hermes 4 405B.

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.

MMLUGeneral knowledge & multi-task understanding
78.6%vs75.4%+3.2% Hermes 4 405B
Hermes 4 405B πŸ†
Nano Banana 2 (Gemini 3.1 Flash Image)
HumanEvalPython coding & logic synthesis
76.8%vs71.6%+5.2% Hermes 4 405B
Hermes 4 405B πŸ†
Nano Banana 2 (Gemini 3.1 Flash Image)
MATHComplex mathematical problem solving
54.0%vs41.4%+12.6% Hermes 4 405B
Hermes 4 405B πŸ†
Nano Banana 2 (Gemini 3.1 Flash Image)
GPQAGraduate-level expert reasoning
39.4%vs28.8%+10.6% Hermes 4 405B
Hermes 4 405B πŸ†
Nano Banana 2 (Gemini 3.1 Flash Image)
HellaSwagCommonsense reasoning and inference
81.6%vs76.0%+5.6% Hermes 4 405B
Hermes 4 405B πŸ†
Nano Banana 2 (Gemini 3.1 Flash Image)
MT-BenchMulti-turn conversation flow quality
8.4%vs7.9%+0.6% Hermes 4 405B
Hermes 4 405B πŸ†
Nano Banana 2 (Gemini 3.1 Flash Image)

Hermes 4 405B Quirks & Gotchas

No developer gotchas reported.

Nano Banana 2 (Gemini 3.1 Flash Image) Quirks & Gotchas

No developer gotchas reported.

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