Claude Opus 5
Pricing & Specs
Anthropic · $5 input / $25 output per 1M tokens · 1M context window
The per-token price never tells the full story. A typical task (1K input + 500 output tokens) on Claude Opus 5 costs about $0.0175 — roughly $17.50 per 1,000 runs. But if it needs 3x the tokens of a cheaper model to match quality on YOUR task, the economics flip. The only way to know is to benchmark it on your actual workload.
Claude Opus 5 API Pricing
| Tokens | Price |
|---|---|
| Input | $5 / 1M tokens |
| Output | $25 / 1M tokens |
| Cached input | $0.5 / 1M tokens |
50% discount available for batch API requests. Cache writes: $6.25/MTok (5min), $10/MTok (1hr). Cache hits & refreshes: $0.50/MTok. Fast mode: $10/$50.
What that means in practice
Claude Opus 5 Specs
| Spec | Value |
|---|---|
| Context window | 1M tokens |
| Max output tokens | 128K tokens |
| Input modalities | text, image |
| Output modalities | text |
| Reasoning model | Yes |
| Tool / function calling | Yes |
| JSON mode | Yes |
| Streaming | Yes |
| Prompt caching | Yes |
| Batch API | Yes |
Notes
Thinking on by default. Full effort ladder: low, medium, high, xhigh, max. Disabling thinking requires effort high or below. Frontier intelligence at half the cost of Fable 5.
FAQ
How much does Claude Opus 5 cost?
Claude Opus 5 costs $5 per 1M input tokens and $25 per 1M output tokens ($0.5 per 1M cached input tokens).
What is Claude Opus 5's context window?
Claude Opus 5 has a 1M-token context window. Maximum output is 128K tokens.
Can I test Claude Opus 5 on my own task?
Yes. OpenMark lets you benchmark Claude Opus 5 against 100+ models on your own task with real API calls — no API keys needed, free tier available.
Is Claude Opus 5 the right model for YOUR task?
Pricing tables can't answer that. Benchmark it against 100+ models
on your actual workload — real API calls, real costs. Free tier available.