AI Model Watch
Models / Anthropic

Claude Sonnet 5

GA

Best combination of speed and intelligence; Anthropic's most agentic Sonnet, performance close to Opus 4.8 at lower cost. Dateless pinned snapshot ID == alias claude-sonnet-5. Extended thinking: No; adaptive thinking: Yes (effort defaults to 'high' on the Claude API and Claude Code). 1M context at standard pricing; max output 128k (300k via Batch API beta header output-300k-2026-03-24). Prices shown are STANDARD ($3 in / $15 out, 5m cache $3.75, 1h cache $6, cache hit $0.30, Batch $1.50/$7.50). INTRODUCTORY pricing of $2 in / $10 out per MTok is in effect through August 31, 2026 (5m cache $2.50, 1h cache $4, cache hit $0.20, Batch $1/$5), reverting to standard on September 1, 2026 — WATCH: if standard is not yet in effect, current live cost is the intro rate. Uses the newer tokenizer (~30% more tokens for the same text). Reliable knowledge cutoff Jan 2026; training data cutoff Jan 2026. Supersedes Claude Sonnet 4.6 (now a legacy model). Released 2026-06-30 (system card date).

Claude Sonnet 5 by Anthropic costs $3 per 1M input tokens and $15 per 1M output tokens ($6/1M blended), with a 1M (1.000.000-token) context window. It is generally available (GA), with a knowledge cutoff of Jan 2026.

Last verified: 19 Aug 2026 · sourced from official provider documentation

Provider
Anthropic
Status
GA
Input price
$3 / 1M tokens
Output price
$15 / 1M tokens
Cached input
$0.3 / 1M tokens
Blended price
$6 / 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 ↗

See also

Explore more

All Anthropic models→

Prices, context windows and lifecycle status for every Anthropic model we track.

Compare models head-to-head→

Side-by-side price, context and status for the models developers weigh against each other.

FAQ

Claude Sonnet 5 — questions & answers

How much does Claude Sonnet 5 cost?

Claude Sonnet 5 is priced at $3 per 1M input tokens and $15 per 1M output tokens ($6/1M blended at a 3:1 input-to-output ratio), with cached input at $0.3 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.