How much does Claude Opus 5 cost?

Claude Opus 5 is billed per token: $5 per million input tokens and $25 per million output tokens. Cached input reads cost $0.5 per million tokens.

What is the Claude Opus 5 context window?

Claude Opus 5 accepts up to 1,000,000 tokens of context and can return up to 128,000 output tokens per request.

Is Claude Opus 5 cheaper than other Anthropic models?

No — 3 of the 7 Anthropic models we track have a lower input price, starting with Claude Haiku 4.5 at $1/M, Claude Sonnet 4.6 at $3/M, Claude Sonnet 5 at $2/M.

Has Claude Opus 5 pricing changed recently?

No. Claude Opus 5 pricing has been stable across every weekly snapshot we've recorded.

Claude Opus 5 Pricing

Name: Claude Opus 5
Brand: Anthropic
Price: 5 USD

Anthropic · Live

Prices verified September 14, 2026

Claude Opus 5 costs $5 per million input tokens and $25 per million output tokens on the Anthropic API. Cached input reads are billed at $0.5 per million tokens. It supports a 1,000,000-token context window and up to 128,000 output tokens per request. The model supports extended reasoning, image input, tool use, long context. Released July 24, 2026. Pricing verified September 14, 2026.

Claude Opus 5 API pricing

Claude Opus 5 API pricing is $5 per million input tokens and $25 per million output tokens, verified September 14, 2026.

Input (per 1M tokens): $5
Output (per 1M tokens): $25
Cached input (per 1M tokens): $0.5
Cache write, 5m TTL: $6.25
Batch discount: 50%
Context window: 1,000,000 tokens
Max output: 128,000 tokens
Released: July 24, 2026

Estimate your Claude Opus 5 cost

Capabilities

Claude Opus 5 supports extended reasoning, image input, tool use, long context.

Extended reasoningImage inputTool useLong context

Price history

See full Claude Opus 5 price history

Claude Opus 5 API pricing has not changed since August 31, 2026.

Price-stable since August 31, 2026.

Frequently asked questions

Short answers to the most common questions about Claude Opus 5 pricing, limits, and capabilities.

Notes

Released July 24, 2026 at UNCHANGED Opus pricing ($5/$25 per MTok input/output) but with substantially higher capability. Anthropic positions it as "approaching Fable 5 intelligence at half the price." 1M-token context window. Benchmarks: IMO 2026 42/42 gold-medal performance (above the 29/42 cutoff), ARC-AGI-3 30.16% at high effort (~4x previous leaderboard best), Humanity's Last Exam 56.3% no tools / 64.7% with tools. More than doubles Opus 4.8 on agentic terminal coding benchmarks. Lowest misalignment score Anthropic has ever measured. This release effectively deprecates Opus 4.8 (same price, worse) and puts pricing pressure on Fable 5 ($10/$50 for marginal capability gain). Signals Anthropic competing on capability, not extracting rents — likely a competitive response to GPT-5.6 Sol, Kimi K3, and Grok 4.5 crowding the frontier. [2026-08-31] Config backfill, no dollar price moved. Batch Discount % set to 50 (Batch API halves both input and output) and Max Output Tokens set to 128000 (synchronous limit; the Message Batches API allows up to 300K output via the output-300k-2026-03-24 beta header). Input $5 / output $25 / cache write 5m $6.25 / cache read $0.50 all re-verified unchanged. Sources: platform.claude.com pricing docs, finout.io/blog/anthropic-api-pricing, spheron.network Claude Opus 5 pricing.