LLM Comparison

GPT-6 Luna vs Hermes 4 70B

Side-by-side specs, pricing & capabilities · Updated September 2026

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2/6 models

Same tier:

	GPT-6 Luna	Hermes 4 70B
Organization	OpenAI	Nous Research
OpenTools Score
Family	GPT-6	Hermes
Status	Current	Current
Release Date	Sep 2026	Aug 2025
Context Window	1.1M tokens	131K tokens
Input Price	$0.10/M tokens	$0.13/M tokens
Output Price	$0.50/M tokens	$0.40/M tokens
Pricing Notes	OpenAI standard API, USD per million tokens for prompts up to 272K input tokens: $0.10 input, $0.01 cached input, $0.125 cache writes, $0.50 output. Above 272K input tokens, the full request costs 2x input/cache and 1.5x output. Batch/Flex cost 50% of Standard; Fast costs 2x; regional processing adds 10% where available. Reasoning output tokens are charged at output rates.	—
Capabilities	textvisionreasoningcodingtool-uselong-contextcontext-caching	textcode
Training Cutoff	2026-05-18	—
Max Output	128K tokens	—
API Identifier	`gpt-6-luna`	`nousresearch/hermes-4-70b`
Benchmarks
Artificial Analysis Intelligence Index v4.3.2	37.2559686869738artificial-analysis	—
	View GPT-6 Luna	View Hermes 4 70B

Cost Calculator

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Input tokens / month

Output tokens / month

Model	Input	Output	Total / mo	vs Best
Hermes 4 70BCheapest	$0.13	$0.20	$0.33	—
GPT-6 Luna	$0.10	$0.25	$0.35	+6%

OpenAI

GPT-6 Luna

GPT-6 Luna is OpenAI's efficient reasoning model for focused, high-volume tasks. It accepts text and images, produces text, supports a 1,050,000-token context window and 128,000 output tokens, and is available through the Responses and Chat Completions APIs under the exact gpt-6-luna identifier.

Nous Research

Hermes 4 70B

Hermes 4 70B is a large language model from Nous Research. Supports up to 131,072 token context window. Available from $0.13/M input tokens.