Is Curtly compatible with Anthropic tool use on Mythos?

Yes. Curtly preserves tool schemas and function call definitions bit-for-bit via Safe Vault.

How fast is Curtly proxy overhead on Mythos requests?

Under 2 milliseconds. Curtly operates in-memory so there is zero noticeable delay in first-token delivery.

Anthropic · Claude Mythos Preview · Claude BPE

Claude Mythos Preview token cost optimizer and calculator

Protect your budget on Anthropic most advanced preview tier with intelligent token governance.

Input token price

$10.00/1M

Output token price

$50.00/1M (5x)

Tokenizer family

Claude BPE

Average combined savings

Up to 65%

Why Claude Mythos Preview generates high API invoices

Claude Mythos Preview offers next-generation reasoning power, but at $10.00/1M input and $50.00/1M output, experimental agent development can deplete developer credits in hours. Unoptimized prompt iteration and verbose model responses create massive financial friction.

Experimental frontier pricing

At $50.00 per million output tokens, a single multi-turn development session can cost several dollars without optimization.

Deep analytical verbosity

Mythos provides comprehensive answers with extensive multi-perspective analysis, generating excessive output tokens unless constrained.

Sub-token inflation on code structures

Anthropic BPE tokenizer handles technical syntax with higher token ratios compared to 200k tokenizers.

Anthropic Claude BPE preview mechanics

Efficiency rating: 65k vocabulary with sensitivity to repetitive delimiters

Standard Anthropic 65k BPE vocabulary requiring careful indentation and syntax handling to prevent sub-token fragmentation.

How Curtly optimizes Claude Mythos Preview workflows

Safe Vault AST lock

Protects critical prompt segments, system prompts, and tool calls from unintended modification.

Output brevity governor

Eliminates unsolicited preamble and filler while retaining the full depth of Mythos reasoning.

Real-time telemetry and budget limits

Provides exact token savings metrics and request quotas to prevent runaway billing.

1-line drop-in integration (typescript)

import Anthropic from '@anthropic-ai/sdk'; const anthropic = new Anthropic({ baseURL: 'https://proxy.curtly.dev/v1', defaultHeaders: { 'X-Curtly-Key': process.env.CURTLY_API_KEY }, }); const message = await anthropic.messages.create({ model: 'mythos-preview', max_tokens: 4096, messages: [{ role: 'user', content: 'Design distributed consensus algorithm' }], });

Claude Mythos Preview ROI simulator