How much can I save switching from Claude Mythos 5 to GPT-5.5?

You can save 50% on input and 40% on output tokens by switching. For a typical workload of 1M input + 500K output tokens per month, GPT-5.5 costs $20.00 vs $35.00 — saving $15.00/month.

Which model should I use: Claude Mythos 5 or GPT-5.5?

Choose GPT-5.5 for cost efficiency — it's 50% cheaper on input. Choose Claude Mythos 5 if you need premium reasoning capabilities. Claude Mythos 5 has 1M context vs GPT-5.5's 1.05M.

Claude Mythos 5 vs GPT-5.5

Q: Is GPT-5.5 cheaper than Claude Mythos 5?

Yes, GPT-5.5 costs $5/$30 per 1M tokens while Claude Mythos 5 costs $10/$50. That's 50% cheaper on input and 40% cheaper on output.

Side-by-side API pricing comparison: which model gives you more for less?

Last verified Jun 2026 · Prices per 1M tokens

Quick Comparison

Feature	Claude Mythos 5	GPT-5.5
Provider	Anthropic	OpenAI
Tier	Premium	Premium
Input Price	$10	$5
Output Price	$50	$30
Context Window	1M	1.05M
Verified	Jun 2026	Jun 2026

When to Use Each

💰 Cost-Sensitive Workloads

High-volume APIs, batch processing, and startups watching runway.

→ Use GPT-5.5 — 50% cheaper input, 40% cheaper output

🧠 Complex Reasoning

Tasks requiring advanced reasoning, code generation, or nuanced analysis.

→ Claude Mythos 5 for premium capabilities

⚡ High-Throughput APIs

Real-time chatbots, streaming responses, and latency-sensitive apps.

→ GPT-5.5 for cost at scale, Claude Mythos 5 if quality matters more

🔬 Prototyping & Testing

Development, experimentation, and non-critical workloads.

→ Use GPT-5.5 — same context (1M), much cheaper

Track price changes for both models

APIpulse Pro monitors 49 models across 10 providers. Get alerts when Claude Mythos 5 or GPT-5.5 prices change.

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Frequently Asked Questions

Is GPT-5.5 cheaper than Claude Mythos 5?

Yes. GPT-5.5 costs $5 input / $30 output per 1M tokens, while Claude Mythos 5 costs $10 input / $50 output. That's 50% cheaper on input and 40% cheaper on output.

How much can I save switching to GPT-5.5?

For a typical workload (1M input + 500K output tokens/month), GPT-5.5 costs $20.00/month vs $35.00/month for Claude Mythos 5. That's a savings of $15.00/month (50%).

Which should I choose: Claude Mythos 5 or GPT-5.5?

Choose GPT-5.5 for cost efficiency. Choose Claude Mythos 5 for premium reasoning and complex tasks. Claude Mythos 5 has 1M context vs GPT-5.5's 1.05M.