Question 1

How much does the Claude API cost per token?

Accepted Answer

Claude API pricing is measured per million tokens (MTok). As of May 2026 per Anthropic’s pricing page: Claude Haiku 4.5 at $1.00 input / $5.00 output, Claude Sonnet 4.6 at $3.00 / $15.00, and Claude Opus 4.7 at $5.00 / $25.00. Output tokens cost 5x input across all current models. Standard rates before caching or batch discounts.

Question 2

Which Claude model is cheapest for production use?

Accepted Answer

Claude Haiku 4.5 pricing at $1.00/$5.00 per MTok is the cheapest current-generation model. It handles classification, routing, extraction, and summarization well. For general-purpose work, Claude Sonnet 4.6 at $3.00/$15.00 offers the best price-to-quality ratio. Legacy Haiku 3 at $0.25/$1.25 remains available.

Question 3

How do I reduce my Anthropic API bill?

Accepted Answer

Five levers: enable prompt caching (90% savings on cached input), use batch processing (50% off), route simple tasks to Haiku (5–25x savings), trim unnecessary context, and default to global routing (avoid the 1.1x US-only multiplier).

Question 4

Is Claude API cheaper than OpenAI?

Accepted Answer

On raw Anthropic token cost, OpenAI is generally cheaper. GPT-5.4 Standard at $2.50/$15.00 vs. Sonnet 4.6 at $3.00/$15.00. But both offer ~90% caching discounts, converging effective costs for cache-heavy workloads. Claude leads on flat-rate 1M context and complex reasoning quality.

Question 5

Is there a free Claude API tier?

Accepted Answer

No permanent Anthropic free tier for production API use. Anthropic occasionally offers trial credits for new accounts. Check Anthropic’s console for current promotions. The Free subscription plan offers limited chat access — not API access.

Question 6

How does prompt caching work for Claude API pricing?

Accepted Answer

Claude prompt caching stores previously processed prompt content; system instructions, reference documents, conversation prefixes, so subsequent requests skip reprocessing and read from cache at 10% of standard input cost. Anthropic offers two TTL options: a five-minute cache (1.25x write cost, ROI-positive after one read) and a one-hour cache (2x write cost, ROI-positive after two reads). For most production applications, the five-minute TTL with auto-refresh is sufficient.

Question 7

What’s the difference between Claude Opus, Sonnet, and Haiku pricing?

Accepted Answer

Claude Haiku pricing ($1/$5) is fastest and cheapest. Claude Sonnet pricing ($3/$15) is the production default. Claude Opus pricing ($5/$25) is the flagship. Opus 4.6 also offers Fast Mode at $30/$150. Claude Code pricing details in CloudZero’s dedicated guide.

Question 8

How does Anthropic enterprise pricing work?

Accepted Answer

Anthropic Claude enterprise pricing for API access follows the same per-token rates. Enterprise features (SSO, custom retention, HIPAA) are on the subscription side. Through AWS Bedrock or Google Vertex AI, enterprise packaging adds SLA guarantees and regional endpoints at ~10% premium. Anthropic Claude API pricing per token remains identical at the enterprise tier.

Question 9

How much does a single Claude API request cost?

Accepted Answer

A typical API request costs $0.001 to $0.50 depending on the model, prompt length, and response length. A short Haiku classification call (500 input / 100 output tokens) costs approximately $0.001. A long Opus reasoning call (50,000 input / 5,000 output tokens) costs approximately $0.375. Prompt caching and batch processing can reduce these per-request costs by 50–90%.

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