How much cheaper is Claude Sonnet 5 than Claude Mythos 5?

Claude Sonnet 5 costs $3/$15 per 1M tokens while Claude Mythos 5 costs $10/$50. Sonnet 5 is 70% cheaper on input and 70% cheaper on output. For 1M input + 500K output tokens/month, Sonnet 5 costs $10.50 vs Mythos 5's $35 — saving $24.50/month.

Is Claude Mythos 5 worth 3.3x the cost of Sonnet 5?

Claude Mythos 5 at $10/$50 is Anthropic's most capable premium model. Sonnet 5 at $3/$15 offers excellent quality at 70% lower cost. Choose Mythos 5 for the most demanding tasks. Choose Sonnet 5 for most production workloads.

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Mid Premium

Claude Sonnet 5 vs Claude Mythos 5

Same provider, different tiers. Sonnet 5 at $3/$15 offers 70% savings over Mythos 5 at $10/$50 — both with 1M context. Is Mythos 5's premium quality worth 3.3x the cost?

Pricing data verified: Jul 1, 2026

Specification	Claude Sonnet 5 (Anthropic)	Claude Mythos 5 (Anthropic)
Input Price (per 1M tokens)	$3.00	$10.00
Output Price (per 1M tokens)	$15.00	$50.00
Context Window	1M tokens	1M tokens
Tier	Mid	Premium
Provider	Anthropic	Anthropic

Calculate Your Exact Costs

See how much you can save with Sonnet 5 — or whether Mythos 5's premium quality justifies 3.3x higher cost.

Input Tokens per Request

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Anthropic

Claude Sonnet 5

$0.00

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Anthropic

Claude Mythos 5

$0.00

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Cost per request

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Which Model for Which Use Case?

Complex Reasoning

Multi-step analysis, research synthesis. Mythos 5 at $10/$50 is Anthropic's most capable model. Sonnet 5 at $3/$15 offers excellent quality at 70% lower cost for most reasoning tasks.

Most tasks: Sonnet 5 | Peak reasoning: Mythos 5

Code Generation

Writing, debugging, refactoring code. Both models produce excellent code. Sonnet 5 at $3/$15 is 70% cheaper, making it the better value for code-heavy workloads.

Better value: Sonnet 5

Content Generation

Blog posts, documentation, marketing copy. Sonnet 5 at $3/$15 is 70% cheaper on output, making it the better value for content-heavy workloads.

Better value: Sonnet 5

High-Volume Batch Processing

At scale, the 3.3x cost difference adds up. 10M input + 5M output tokens/month costs $105 with Sonnet 5 vs $350 with Mythos 5 — saving $245/month.

Better value: Sonnet 5

Choosing between Anthropic models?

APIpulse Pro lets you compare all 49 models including Sonnet 5 ($3/$15) and Mythos 5 ($10/$50), save scenarios, and export cost reports.

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Frequently Asked Questions

How much cheaper is Claude Sonnet 5?

Sonnet 5 costs $3/$15 per 1M tokens vs Mythos 5 at $10/$50 — 70% cheaper on both input and output. At 1M input + 500K output tokens/month, that's $10.50 vs $35, saving $24.50/month.

Is Mythos 5 worth 3.3x the cost of Sonnet 5?

Mythos 5 at $10/$50 is Anthropic's most capable premium model. For the most demanding tasks, the 3.3x premium may justify itself in quality. For most production workloads, Sonnet 5 at $3/$15 offers excellent value.

When should I use Sonnet 5 over Mythos 5?

Choose Sonnet 5 ($3/$15) for most production workloads. Choose Mythos 5 ($10/$50) for the most complex reasoning and tasks where absolute peak quality justifies 3.3x higher cost.