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Claude Sonnet 4

ActiveAnthropicanthropic/claude-sonnet-43 platforms

What breaksAdd its dates to my calendar

Shutting down. Claude Sonnet 4 shuts down on Amazon Bedrock on Oct 14, 2026. Anthropic names Claude Sonnet 5.5 as the replacement.

Today
Next shutdown
TodayOct 14, 2026 · Amazon Bedrock
Arena Text
1,402#75 of 128 · Arena
GPQA Diamond
79.2%#64 of 108 · Epoch AI
Context window
200KMax output 64K tokens
Released
May 22, 2025Anthropic

Dates on every platform

3 listings · a floor is the earliest possible date
Claude Sonnet 4 on each platform: model ID, status, dates, replacement and source
PlatformModel ID and statusDeprecatedShuts downReplacement
Claude APIAnthropic: Model deprecations (opens in a new tab) · checked Oct 14, 2026claude-sonnet-4-20250514Shut downShut downClaude Sonnet 5.5
Amazon BedrockAmazon Web Services: Amazon Bedrock ListFoundationModels, us-east-1 (opens in a new tab) · checked Oct 14, 2026ap-northeast-1, eu-central-1, eu-north-1, eu-south-1, eu-south-2, eu-west-1, eu-west-3, us-east-1, us-east-2, us-west-1, us-west-2, ap-east-2, ap-northeast-2, ap-northeast-3, ap-south-1, ap-south-2, ap-southeast-1, ap-southeast-2, ap-southeast-3, ap-southeast-4, ap-southeast-5, ap-southeast-7, il-central-1anthropic.claude-sonnet-4-20250514-v1:0Deprecated since Apr 14, 2026 · also apac.anthropic.claude-sonnet-4-20250514-v1:0, eu.anthropic.claude-sonnet-4-20250514-v1:0, global.anthropic.claude-sonnet-4-20250514-v1:0, us.anthropic.claude-sonnet-4-20250514-v1:0–TodayPaid extended access from Jul 14, 2026–
Google Vertex AIGoogle Cloud: Claude Sonnet 4 on Google Cloud (opens in a new tab) · checked Oct 14, 2026claude-sonnet-4@20250514Active · also claude-sonnet-4–Floor passedNot sooner than–

New customers can't use Legacy models on Bedrock, and accounts that stop calling one for 15 days may lose access before end of life.

In us-east-1, requests go through a cross-Region inference profile (listed in aliases).

Public extended access started on 14 July 2026; the model provider may charge higher prices until end of life.

Retired on the Claude API on June 15, 2026. Google lists no shutdown date here; its earliest retirement date has passed.

What breaks when you move off Claude Sonnet 4

  • Availability

    New customers can't use Legacy models, and accounts that stop calling one for 15 days may lose access before the end-of-life date.

    Claude Sonnet 4 · Amazon Bedrock ·

  • Availability

    Requests to the model ID fail after the end-of-life date. Bedrock does not migrate applications to another model.

    Claude Sonnet 4 · Amazon Bedrock ·

  • Tooling

    You can't create new Provisioned Throughput or fine-tuning jobs for a Legacy model.

    Claude Sonnet 4 · Amazon Bedrock ·

  • Pricing

    During public extended access, the model provider may charge higher prices until end of life.

    Claude Sonnet 4 · Amazon Bedrock ·

Intelligence

Third-party results, credited below
Third-party benchmark scores for Claude Sonnet 4
BenchmarkPublisherScoreRankPublished
Arena TextArena1,402 ± 2#75 of 128Oct 8, 2026
GPQA DiamondEpoch AI79.2% ± 2.7%#64 of 108May 26, 2025
OTIS Mock AIME 2024-2025Epoch AI71.1% ± 6.8%#68 of 105May 22, 2025

Arena (arena.ai), https://arena.ai/leaderboard

Epoch AI, ‘Capabilities & benchmarking’. Published online at epoch.ai. Retrieved from ‘https://epoch.ai/benchmarks’ [online resource].

List prices

$ per 1M tokens, with each price’s source
List prices per 1M tokens, in US dollars
PlatformInputCachedOutputIn effectSource
Amazon Bedrockanthropic.claude-sonnet-4-20250514-v1:0$3.00$0.30$15.00Sep 1, 2026Current · Standard tier, in-Region or geographic cross-Region inference.Amazon Web Services: AWS Price List API: AmazonBedrockFoundationModels, us-east-1 (opens in a new tab)

Change history

ShutdownClaude Sonnet 4 reaches end of life on Amazon BedrockAmazon Bedrock4 breaks

Bedrock moved Claude Sonnet 4 to Legacy on 14 April 2026 and public extended access began on 14 July 2026. ListFoundationModels gives the end of life as 08:00 UTC on 14 October 2026 in most Regions.

Platform
Amazon Bedrock
Announced
  • AvailabilityNew customers can't use Legacy models, and accounts that stop calling one for 15 days may lose access before the end-of-life date.
  • AvailabilityRequests to the model ID fail after the end-of-life date. Bedrock does not migrate applications to another model.
  • ToolingYou can't create new Provisioned Throughput or fine-tuning jobs for a Legacy model.
  • PricingDuring public extended access, the model provider may charge higher prices until end of life.

Source: Amazon Web Services, Amazon Bedrock ListFoundationModels, us-east-1 (opens in a new tab); Amazon Web Services, Amazon Bedrock User Guide: Model lifecycle (Legacy) (opens in a new tab)

ShutdownClaude Sonnet 4 and Claude Opus 4 shut down on the Claude APIClaude API

Requests to claude-sonnet-4-20250514 and claude-opus-4-20250514 fail from the retirement date. Anthropic named Claude Sonnet 5.5 and Claude Opus 4.8 as the replacements.

Platform
Claude API
Announced

Source: Anthropic, Model deprecations (opens in a new tab)

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