AI model comparison

Sonar vs Hermes 3 70B Instruct

Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.

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Perplexity

Sonar

Sonar is lightweight, affordable, fast, and simple to use — now featuring citations and the ability to customize sources.

Input / 1M
$1
Output / 1M
$1
Context
127K

Hermes 3 is a generalist language model with many improvements over [Hermes 2](/models/nousresearch/nous-hermes-2-mistral-7b-dpo), including advanced agentic capabilities, much better roleplaying, reasoning, multi-turn conversation, long context coherence, and improvements across the

Input / 1M
$0.70
Output / 1M
$0.70
Context
131K

At a glance

Quick verdict

How the two models stack up on the things people ask about most.

Lower price

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Hermes 3 70B Instruct

1.4x cheaper for a typical chat

Higher intelligence score

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Sonar

7.7 vs 6.7 on Artificial Analysis

Larger context window

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Hermes 3 70B Instruct

131K vs 127K tokens

Newer release

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Sonar

Released January 27, 2025

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

perplexity logoSonar7.7
nousresearch logoHermes 3 70B Instruct6.7

Coding index

perplexity logoSonarNot available
nousresearch logoHermes 3 70B InstructNot available

Agentic index

perplexity logoSonarNot available
nousresearch logoHermes 3 70B InstructNot available

Pricing

Sonar vs Hermes 3 70B Instruct API pricing

Per-token API rates. Cheaper option highlighted.

Metricperplexity logoSonarnousresearch logoHermes 3 70B Instruct
Input tokensPer 1M tokens$1$0.70
Output tokensPer 1M tokens$1$0.70
Cached input (read)Per 1M tokensNot availableNot available
Cache writePer 1M tokensNot availableNot available
Web searchPer request$0.005Not available

What it costs in practice

Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.

Chat message

2K in, 500 out

perplexity logoSonar$2.50
nousresearch logoHermes 3 70B Instruct$1.75

Coding task

30K in, 4K out

perplexity logoSonar$34
nousresearch logoHermes 3 70B Instruct$23.80

Long document summary

150K in, 2K out

perplexity logoSonar$152
nousresearch logoHermes 3 70B Instruct$106.40

Specs

Context window and capabilities

How much each model can read, how much it can write, and what it accepts as input.

Metricperplexity logoSonarnousresearch logoHermes 3 70B Instruct
Context window127K tokens131K tokens
Max output114K tokens16K tokens
Input typesImage, TextText
Output typesTextText
Reasoning effort levelsNot availableNot available
Default reasoning effortNot availableNot available
Release dateJanuary 27, 2025August 18, 2024

Features

Supported features

API features available for each model.

Metricperplexity logoSonarnousresearch logoHermes 3 70B Instruct
Tool callingNot supportedNot supported
Structured outputsNot supportedSupported
JSON modeNot supportedNot supported
ReasoningNot supportedNot supported
TemperatureSupportedSupported
Stop sequencesNot supportedSupported
Deterministic seedNot supportedSupported
Verbosity controlNot supportedNot supported

Our take

Hermes 3 70B Instruct is 1.4x cheaper for a typical chat. Sonar scores higher on the Artificial Analysis Intelligence Index (7.7 vs 6.7). Hermes 3 70B Instruct has the larger context window (131K vs 127K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.

FAQ

Frequently asked questions

Is Sonar or Hermes 3 70B Instruct cheaper?

Hermes 3 70B Instruct is cheaper for a typical chat (2K input tokens and 500 output tokens). Hermes 3 70B Instruct costs $0.70 per 1M input tokens and $0.70 per 1M output tokens, while Sonar costs $1 per 1M input tokens and $1 per 1M output tokens.

Which has a bigger context window, Sonar or Hermes 3 70B Instruct?

Hermes 3 70B Instruct supports up to 131K tokens of context, compared with 127K for Sonar.

Is Sonar smarter than Hermes 3 70B Instruct?

On the Artificial Analysis Intelligence Index, Sonar scores 7.7 and Hermes 3 70B Instruct scores 6.7, putting Sonar ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.

Can I use Sonar and Hermes 3 70B Instruct at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Sonar and Hermes 3 70B Instruct answer side by side and keep the better response.

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Why choose? Ask both.

Send one prompt to Sonar and Hermes 3 70B Instruct at the same time. Compare the answers side by side and keep the best one.