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Claude Sonnet 4.5

Anthropic official pay-as-you-go API pricing and cost estimates

Anthropicclaude-sonnet-4-5-20250929

Official Pricing Breakdown

Estimate Monthly Cost
Standard pricing · USDBilling Unit: 1M tokens

Input Price

US$ 3.00

Output Price

US$ 15.00

Cached Input

US$ 0.30

Deprecated on Claude API; tentative retirement 2026-11-30; replacement claude-sonnet-5-5. Official: https://platform.claude.com/docs/en/about-claude/model-deprecations (announced 2026-09-30). Still listed with numeric rates on pricing page.

Official Source(opens in a new tab)

Technical Specifications

Context Window
—
Not cataloged
Release Date
Not cataloged
Official announcement date
Spec Source & Verification
Spec not independently verified
About spec verification▼

Context window specifications are provided for reference only and are not part of pricing verification. Actual rates are governed by official vendor documentation and verified timestamps.

API Cost Estimator

Estimated from daily requests & average token volume (per 1M tokens · Standard pricing · USD)

Presets:
Projected Monthly Cost
US$ 298.08/ mo
Daily Requests
11K10K100K1M
Avg Input Tokens / Request
04K32K128K2M
Avg Output Tokens / Request
02K8K32K128K
Prompt Cache Hit Rate (20%)▼

Cached tokens are included within average input tokens, not an additional amount. Presets provide typical hit rates.

0%25%50%75%100%
Monthly Cost Breakdown
Monthly Cost DistributionInput: 39% · Cache Hit: 1% · Output: 60%
Base Input Cost (uncached): US$ 115.20
Cache Hit Input Cost (Monthly): US$ 2.88
Output Subtotal (Monthly): US$ 180.00
Cache Savings: US$ 25.92

Estimates are based on current public list rates and do not account for retries, rate limits, or enterprise discounts. Reasoning tokens are excluded if billed separately.

Related Subscription Plans
Claude Max (5x)
Individual · Billing Cycle: Monthly · Global
US$ 100.00 / mo
Claude Pro
Individual · Billing Cycle: Yearly · Global
US$ 200.00 / yr
Claude Pro
Individual · Billing Cycle: Monthly · Global
US$ 20.00 / mo
Claude Ultra
Individual · Billing Cycle: Monthly · Global
US$ 200.00 / mo
Claude Team Premium
Team / Enterprise · Billing Cycle: Monthly · Global
US$ 125.00 / seat / mo
Claude Team Standard
Team / Enterprise · Billing Cycle: Monthly · Global
US$ 25.00 / seat / mo

Price Change History

  • New Addition

    Claude Sonnet 4.5 (API)

    English translation pending. Check the official source for pricing conditions.

    Read original note (Chinese)

    核对官方定价后首次收录 API 基础报价

    Recorded: 2026/11/02 17:58
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