What is the Claude Sonnet 5 context window?

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

Is Claude Sonnet 5 cheaper than other Anthropic models?

No — 2 of the 13 Anthropic models we track have a lower input price, starting with Claude Haiku 4.5 at $1/M, Claude Haiku 5.5 at $0.1/M.

Has Claude Sonnet 5 pricing changed recently?

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

Claude Sonnet 5 Pricing

Name: Claude Sonnet 5
Brand: Anthropic
Price: 2 USD

Anthropic · Claude Sonnet · Live

Prices verified November 4, 2026

Claude Sonnet 5 costs $2 per million input tokens and $10 per million output tokens on the Anthropic API. Cached input reads are billed at $0.2 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 June 30, 2026. Pricing verified November 4, 2026.

Claude Sonnet 5 API pricing

Claude Sonnet 5 API pricing is $2 per million input tokens and $10 per million output tokens, verified November 4, 2026.

Input (per 1M tokens): $2
Output (per 1M tokens): $10
Cached input (per 1M tokens): $0.2
Cache write, 5m TTL: $2.5
Cache write, 1h TTL: $4
Batch discount: 50%
Context window: 1,000,000 tokens
Max output: 128,000 tokens
Released: June 30, 2026

Estimate your Claude Sonnet 5 cost

Capabilities

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

Extended reasoningImage inputTool useLong context

Price history

See full Claude Sonnet 5 price history

Claude Sonnet 5 API pricing has not changed since July 12, 2026.

Price-stable since July 12, 2026.

Frequently asked questions

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

Notes

PRICE HOLD 2026-08-15: Anthropic officially cancelled the previously announced 2026-09-01 price increase (was going $2/$10 -> $3/$15). Sonnet 5 promotional pricing now permanent at $2/$10. Defensive posture vs OpenAI Sol cut + DeepSeek V4-Pro. Not a price cut, but the announcement itself is material to buyers who were modeling a September budget bump. [2026-09-21] CACHE FIELDS BACKFILLED — no dollar price moved. Input $2 / Output $10 re-verified unchanged, and the cancelled September increase confirmed as permanently cancelled. Populated the three previously-empty cache fields: Cache Write 5m $2.50 (1.25x base input), Cache Write 1h $4.00 (2x base input), Cache Read $0.20 (0.1x base input). Stated explicitly in platform.claude.com pricing docs coverage and corroborated by a second Anthropic pricing roundup ("cached input is billed at 10% of the base input price on a hit"); the 1.25x / 2x / 0.1x multipliers are also internally consistent with the Haiku 4.5, Opus 5 and Fable 5 rows already in this table. Calculator impact: cached Sonnet 5 workloads were previously uncosted and will now price correctly. [2026-10-05] Data completion (no price moved): US-only Multiplier set to 1.1 (page: 1.1x on all token categories for Claude 4.6 and later via inference_geo "us") per https://platform.claude.com/docs/en/about-claude/pricing. Input $2 / Output $10 / cache read $0.20 re-verified unchanged. [2026-10-13] Max Output Tokens 32,000 → 128,000 per https://platform.claude.com/docs/en/models/sonnet-5/overview (1M context, 128K max output; up to 300K on the Message Batches API with a beta header), corroborated by the haimaker.ai listing. Prices unchanged ($2/$10, cache read $0.20). Config correction only; snapshot written as 'No change'.