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Claude Sonnet 5

GA

Legacy since Claude Sonnet 5.5 shipped on 2026-09-28: its model page reads 'Legacy. Released June 30, 2026' and 'you should consider migrating to Claude Sonnet 5.5'; the deprecations table still reads Active with a tentative retirement not sooner than June 30, 2027, so status stays ga. PRICE: $2 in / $10 out per MTok, 5m cache $2.50, 1h cache $4, cache hit $0.20, Batch $1/$5. Anthropic's pricing page now footnotes 'The $2/$10 per million input/output token pricing for Claude Sonnet 5, announced at launch as introductory pricing through August 31, 2026, is now the standard price'. Until 2026-10-02 this row carried the rate announced as standard at launch (previously $3 in / $15 out, cache hit $0.30, Batch $1.50/$7.50) with the introductory rate only in notes; the footnote was read on 2026-10-02 and Anthropic does not date it. Dateless pinned snapshot ID == alias claude-sonnet-5. Extended thinking: No; adaptive thinking: Yes (effort defaults to 'high'). 1M context; max output 128k (300k via Batch API beta header output-300k-2026-03-24). Uses the newer tokenizer (~30% more tokens for the same text). Reliable knowledge cutoff Jan 2026; training data cutoff Jan 2026. Superseded Claude Sonnet 4.6 at launch. Released 2026-06-30 (system card date; 'Released June 30, 2026' on the model page).

Claude Sonnet 5 by Anthropic costs $2 per 1M input tokens and $10 per 1M output tokens ($4/1M blended), with a 1M (1.000.000-token) context window. It is generally available (GA), with a knowledge cutoff of Jan 2026.

Last verified: 15 Oct 2026 · sourced from official provider documentation

Provider
Anthropic
Status
GA
Input price
$2 / 1M tokens
Output price
$10 / 1M tokens
Cached input
$0.2 / 1M tokens
Blended price
$4 / 1M tokens
Context window
1.000.000 tokens (1M)
Max output
128.000 tokens
Modality
text, image, vision
Open weights
No — API only
Knowledge cutoff
2026-01
Released
30 Jun 2026
API string
claude-sonnet-5

Source: Anthropic official documentation ↗

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FAQ

Claude Sonnet 5 — questions & answers

How much does Claude Sonnet 5 cost?

Claude Sonnet 5 is priced at $2 per 1M input tokens and $10 per 1M output tokens ($4/1M blended at a 3:1 input-to-output ratio), with cached input at $0.2 per 1M tokens.

What is the context window of Claude Sonnet 5?

Claude Sonnet 5 has a 1.000.000-token context window (1M), with up to 128.000 output tokens per request.

Is Claude Sonnet 5 deprecated?

No — Claude Sonnet 5 is generally available (GA) and not currently scheduled for deprecation or retirement in our tracker.

Does Claude Sonnet 5 support image or vision input?

Yes — Claude Sonnet 5 accepts image input. Listed modalities: text, image, vision.

Can I self-host Claude Sonnet 5?

No — Claude Sonnet 5 is proprietary. Its weights are not publicly released, so it is available only through Anthropic's API (or hosted partners), not for self-hosting.

What is the API model string for Claude Sonnet 5?

The API model identifier for Claude Sonnet 5 is "claude-sonnet-5" when calling Anthropic's API.

What is Claude Sonnet 5's knowledge cutoff?

Claude Sonnet 5's training knowledge cutoff is Jan 2026.