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Claude Opus 5 Token Counter & Cost Calculator

Ideal for complex agentic coding, deep domain synthesis, and enterprise work

Standard Input / 1M
$5.00
Prompt tokens
Cached Input / 1M
$0.50
Prompt caching rate
Output / 1M
$25.00
Generation completion
Context Window
200k
Max out: 16.4k

Interactive Cost & Token Simulator for Claude Opus 5

Live Calculation
Input Tokens2,500
Output Tokens800
Requests / Day5,000
Prompt Caching Ratio (50%)$0.5/M cached rate
Cost / Request$0.0269
Daily Spend (5,000 reqs)$134.38
Monthly Run-Rate (30d)$4,031.25

Standard Workload Cost Scenarios

ScenarioInput TokensOutput TokensUncached CostWith Prompt Caching
Short Chat Query1,000500$0.0175$0.0130
Document Summarization10,0002,000$0.1000$0.0550
Codebase & Context Analysis100,00020,000$1.00$0.5500
Batch Corpus Processing1,000,000100,000$7.50$3.00
Technical Architecture & Pricing VerificationVerified: September 8, 2026
Model ArchitectureClaude Opus 5
Provider OrganizationAnthropic
Tokenizer EncodingAnthropic Claude BPE (~65k vocabulary)
API ConnectivityAnthropic Messages API (/v1/messages). Supported on Anthropic API, AWS Bedrock, and GCP Vertex AI.
Batch API 50% DiscountSupported (50% off input & output)
Cache Write Rate / 1M$6.25
Tier 1 Rate Quota100 RPM · 100k TPM
Blended 3:1 Cost / 1M Tokens$10.00
Enterprise flagship tier. 50% discount available via Anthropic Batch API.Anthropic Official Pricing

Verified Pricing History

August 2026: $5/M input · $25/M output ($0.5/M cached)
Claude Opus 5 released at 66% lower cost than Claude 3 Opus ($15/$75).
March 2024: $15/M input · $75/M output ($1.5/M cached)
Legacy Claude 3 Opus baseline pricing.

When to Choose Claude Opus 5

Ideal for production workloads demanding flagship capabilities, deep context depth (200k tokens), and reliability from Anthropic. Excellent when predictable tokenomics and prompt caching support are paramount.

When Another Model May Be Better

If your use-case requires sub-second streaming latency or ultra-high frequency classification at micro-cent pricing, consider lighter budget options such as Gemini Flash-Lite or Claude Haiku. For deep formal logic, consider dedicated reasoning models like o3.

Frequently Asked Questions About Claude Opus 5

How much does 1 million tokens cost with Claude Opus 5?

For Claude Opus 5, 1 million input tokens costs $5.00, while 1 million output tokens costs $25.00. If using prompt caching, repetitive input prefixes are discounted to $0.50 per million.

What is the context window for Claude Opus 5?

Claude Opus 5 features a maximum context window of 200,000 tokens (~150,000 words), with a maximum output limit of 16,384 tokens per completion.

Which tokenizer does Claude Opus 5 use?

Claude Opus 5 utilizes the Anthropic Claude BPE (~65k vocabulary). Token counting on TokenMath runs client-side to ensure maximum privacy.

Does Claude Opus 5 support prompt caching discounts?

Yes. Claude Opus 5 supports prompt caching with a cached input rate of $0.50/1M (saving up to 90% on repeated input context).