Claude Mythos 5.1 vs Gemini 3.8 Live

Pricing verdict: Claude Mythos 5.1 vs Gemini 3.8 Live: Gemini 3.8 Live is cheaper for input-heavy usage ($0.75/M vs $10.00/M input tokens), while Claude Mythos 5.1 is better for long-context tasks (1,000,000 tokens).

Direct answer: choose Gemini 3.8 Live for lower token spend and choose Claude Mythos 5.1 when your workload needs longer context.

Compare API pricing, input and output token costs, context windows, and monthly estimates on one page so you can pick the right model fast.

Anthropic

Claude Mythos 5.1

Google

Gemini 3.8 Live

Try Anthropic →Try Google →

Claude Mythos 5.1 pricing page Gemini 3.8 Live pricing page Anthropic provider overview Google provider overview

Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

Claude Mythos 5.1

Per Request:$0.035

Daily:$3.50

Monthly:$105.00

Yearly:$1,277.50

Gemini 3.8 Live

Per Request:$0.003000

Daily:$0.30

Monthly:$9.00

Yearly:$109.50

Cost Differences

$0.032

Per Request

$3.20

Daily

$96.00

Monthly

$1,168.00

Yearly

Gemini 3.8 Live costs less than Claude Mythos 5.1

Quick Recommendation

Winner for direct API pricing: Gemini 3.8 Live. At the default workload, Gemini 3.8 Live saves about $96.00/month ($1,168.00/year) versus Claude Mythos 5.1.

Claude Mythos 5.1 full pricing breakdown Gemini 3.8 Live full pricing breakdown Anthropic API pricing details Google API pricing details Anthropic vs Google API pricing GPT-6 Astra vs Claude Fable 5.1 GPT-6 Astra vs Claude Mythos 5.1

Feature Comparison

Feature	Claude Mythos 5.1	Gemini 3.8 Live
Provider	Anthropic	Google
Input Price	$10.00/1M tokens	$0.75/1M tokens
Output Price	$50.00/1M tokens	$4.50/1M tokens
Context Window	1,000,000 tokens	131,072 tokens
Max Output	128,000 tokens	65,536 tokens
Category	flagship	balanced
Capabilities	textvisionreasoningcode	textvisionaudiovideoreasoningstreaming
Release Date	9/1/2026	9/15/2026

Claude Mythos 5.1 vs Gemini 3.8 Live: Which Should You Choose?

Choosing between Claude Mythos 5.1 and Gemini 3.8 Live depends on your priorities: cost efficiency, context length, or raw capability. Gemini 3.8 Live is the more affordable option at $0.75/1M input tokens — 93% cheaper than Claude Mythos 5.1. Meanwhile, Claude Mythos 5.1 offers a significantly larger context window at 1,000,000 tokens vs 131,072 for Gemini 3.8 Live.

These models come from different providers — Anthropic and Google — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with Anthropic, switching to Googleinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.

These models target different tiers: Claude Mythos 5.1 is a flagship model while Gemini 3.8 Live is balanced. This means they're optimized for different workloads. Claude Mythos 5.1 is built for complex tasks that require deeper reasoning, while Gemini 3.8 Live offers better value for routine operations.

Output costs matter too. Claude Mythos 5.1 charges $50.00/1M output tokens vs $4.50 for Gemini 3.8 Live. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Gemini 3.8 Live has the edge here at $4.50/1M output tokens.

Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.

Best Use Cases

Choose Claude Mythos 5.1 when:

• You need a larger context window (1,000,000 tokens)
• You need longer outputs (up to 128,000 tokens)
• You're already using Anthropic's API ecosystem

Choose Gemini 3.8 Live when:

• Budget is a primary concern
• You need more capabilities (audio, video, streaming)
• You're already using Google's API ecosystem

Pros and Caveats at a Glance

Claude Mythos 5.1

• Input pricing: $10.00/M tokens
• Output pricing: $50.00/M tokens
• Context window: 1,000,000 tokens
• Max output: 128,000 tokens

Watch out for

• Higher input cost than Gemini 3.8 Live
• Higher output cost than Gemini 3.8 Live

Gemini 3.8 Live

• Input pricing: $0.75/M tokens
• Output pricing: $4.50/M tokens
• Context window: 131,072 tokens
• Max output: 65,536 tokens

Watch out for

• Smaller context window than Claude Mythos 5.1

Try Different Scenarios

Use the calculator below to see how costs change with different usage patterns

Claude Mythos 5.1 (Anthropic)

Cost Calculator

Provider

Model

Input Tokens

Output Tokens

Requests/Day

Select a provider and model to see costs

Gemini 3.8 Live (Google)

Cost Calculator

Provider

Model

Input Tokens

Output Tokens

Requests/Day

Select a provider and model to see costs

Start using Claude Mythos 5.1 today

Start using Gemini 3.8 Live today

Frequently Asked Questions

Which is cheaper, Claude Mythos 5.1 or Gemini 3.8 Live?▼

Gemini 3.8 Live is cheaper for input tokens at $0.75 per million tokens vs $10.00 for Claude Mythos 5.1 — that's 93% savings on input costs.

What is the context window difference between Claude Mythos 5.1 and Gemini 3.8 Live?▼

Claude Mythos 5.1 supports 1,000,000 tokens while Gemini 3.8 Live supports 131,072 tokens — a difference of 868,928 tokens in favor of Claude Mythos 5.1.

Which model is better for AI Chatbot?▼

Both models support text. For ai chatbot, Gemini 3.8 Live is the lower-cost option, while Claude Mythos 5.1 offers a larger context window (1,000,000 vs 131,072 tokens). Choose Gemini 3.8 Live for budget sensitivity or Claude Mythos 5.1 for longer context tasks.

Which model has better overall pricing for heavy usage?▼

At 100 requests/day with 1,000 input and 500 output tokens each, Claude Mythos 5.1 costs about $105.00/month and Gemini 3.8 Live costs about $9.00/month. Overall, Gemini 3.8 Live has lower combined input + output rates ($0.75 in, $4.50 out) vs Claude Mythos 5.1.

Where can I compare Anthropic and Google API pricing beyond this model matchup?▼

See the Anthropic vs Google provider comparison page for lineup-level averages, then review each model page for exact per-token rates.