Claude 4
Anthropic
Product status: Historical record
The original claude-opus-4-20250514 and claude-sonnet-4-20250514 models were retired from the Claude API on 2026-06-15. This entry preserves that release for historical research and migration, not current recommendations. Partner platforms set separate schedules; this review did not establish their availability or the current Claude app model roster. This page preserves a historical product record. It is excluded from current recommendations. The descriptions, features, screenshots and editorial opinions below describe its historical offering, not a service available to buy or use now.
- Hosted service:
- Not confirmed
Status source checked: · Status source
Claude 4 — Historical record. The original claude-opus-4-20250514 and claude-sonnet-4-20250514 models were retired from the Claude API on 2026-06-15. This entry preserves that release for historical research and migration, not current recommendations. Partner platforms set separate schedules; this review did not establish their availability or the current Claude app model roster.
Historical product information
Product preview
Decision notes
This page preserves a historical product record. It is excluded from current recommendations. The descriptions, features, screenshots and editorial opinions below describe its historical offering, not a service available to buy or use now.
Official-document research
Based on the cited documentation. We did not use the product, purchase a plan, or run quality, speed or reliability tests in this review.
Consider it for
- Auditing systems that used the original 20250514 API models
- Interpreting dated Claude 4 launch materials and planning migration
Choose another approach if
- New deployments that require these retired first-party API models
- Selecting the current Claude application or assuming every 4.x model has the same limits
Pricing and conditions
Documented terms
Reference pricing lists original Opus 4 at USD 15 input/75 output and Sonnet 4 at USD 3 input/15 output per million tokens, with retirement markers. These are historical base-token references, not an available first-party offer. Cache, batch and tool charges differ; third-party access, regional/tax treatment and current contracts were not checked. Claude app subscriptions do not establish access to these exact models.
Pricing source read:
Pricing or terms sourceCode, model and service licensing
This record is the retired claude-opus-4-20250514 / claude-sonnet-4-20250514 API generation, not an open-weight release. Today's Anthropic commercial terms assign any Anthropic output rights to customers and prohibit training on customer content; consumer Claude has different terms and training controls. These current texts do not prove an earlier customer's contract or restore the retired API IDs. A Claude subscription or later 4.x model is not a license to this original generation. Confirm any partner-cloud contract and rights to inputs and generated code/media; no model download or infringement clearance is established.
Basis and limits of the recorded score
The previous 4.8/5 score is preserved without reassessment. No original scoring worksheet or hands-on evidence was established in this pass; it is not a current recommendation for the retired models.
Overview
This entry covers the original Claude Opus 4 and Claude Sonnet 4 generation announced in 2025, including the dated Claude API models ending in 20250514. The launch announcement describes extended thinking and tool use. It is historical model documentation, not a description of every later model with a 4.x name or of the current Claude application.
Anthropic's deprecation record says both original models retired from the first-party Claude API on June 15, 2026. A published old price or launch benchmark does not establish current access. A system migrating from them should inventory the exact model ID, tools, prompts and acceptance cases, then evaluate a supported replacement. Availability through a separately operated cloud service needs confirmation with that provider; this review did not check those accounts.
The useful role of this page is migration and historical interpretation. We did not rerun the launch benchmarks, compare writing quality or test a replacement. The old claims of best coding, safety without trade-offs and a general one-million-token context were removed because they do not describe a verified current offer for these retired API models. The existing editorial score is retained only as a previous opinion with its evidence limits stated below.
Sources
The factual claims in this review were read from the pages below. Each date is when an editor last opened the source, not when the product changed.
- Vendor changelog Checked 2026-10-15
- Vendor documentation Checked 2026-10-15
- Vendor pricing page Checked 2026-10-15
- Vendor documentation Checked 2026-10-15
- Vendor documentation Checked 2026-10-15
Pros / Cons
Pros
- Dated launch documentation identifies the original models
- Extended thinking and tool use described at launch
- Official retirement and migration references remain available
Cons
- Original first-party API models have retired
- Cloud-provider access requires separate verification
- Launch benchmarks do not establish current comparative quality
Who it's for
Legacy model inventory
Migration acceptance-case planning
Historical release research
Bottom line
Use this record to understand and migrate from the original Claude 4 API models; check a supported model's own documentation before new deployment.
Historical features
Tags
Frequently asked questions
Is Claude 4 currently available?
The original claude-opus-4-20250514 and claude-sonnet-4-20250514 models were retired from the Claude API on 2026-06-15. This entry preserves that release for historical research and migration, not current recommendations. Partner platforms set separate schedules; this review did not establish their availability or the current Claude app model roster. This page preserves a historical product record. It is excluded from current recommendations. The descriptions, features, screenshots and editorial opinions below describe its historical offering, not a service available to buy or use now.
What is Claude 4?
Historical product information: Historical record of the original Opus 4 and Sonnet 4 API models (20250514), retired from the first-party Claude API on 2026-06-15; other cloud access is unverified. This page preserves a historical product record. It is excluded from current recommendations. The descriptions, features, screenshots and editorial opinions below describe its historical offering, not a service available to buy or use now.
What costs and terms should I check for Claude 4?
The directory records Freemium as the historical pricing model for Claude 4, without a recorded pricing check date. It is not a current price, free tier or purchasable offer. Refer to the status source for the closure or historical context. Reference pricing lists original Opus 4 at USD 15 input/75 output and Sonnet 4 at USD 3 input/15 output per million tokens, with retirement markers. These are historical base-token references, not an available first-party offer. Cache, batch and tool charges differ; third-party access, regional/tax treatment and current contracts were not checked. Claude app subscriptions do not establish access to these exact models.
Is Claude 4 open source?
A source-code link is a historical or repository reference. It does not mean the former hosted service is available, maintained or ready to run. Check the repository status and license separately. This record is the retired claude-opus-4-20250514 / claude-sonnet-4-20250514 API generation, not an open-weight release. Today's Anthropic commercial terms assign any Anthropic output rights to customers and prohibit training on customer content; consumer Claude has different terms and training controls. These current texts do not prove an earlier customer's contract or restore the retired API IDs. A Claude subscription or later 4.x model is not a license to this original generation. Confirm any partner-cloud contract and rights to inputs and generated code/media; no model download or infringement clearance is established.
What are the best alternatives to Claude 4?
Notable Conversational AI alternatives include ChatGPT, Claude, Gemini. Browse all 67 tools in our Conversational AI category for a full overview.
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Basic Info
- Historical pricing model
- Freemium
The historical pricing check date is not recorded; this is not a current offer.
Reference pricing lists original Opus 4 at USD 15 input/75 output and Sonnet 4 at USD 3 input/15 output per million tokens, with retirement markers. These are historical base-token references, not an available first-party offer. Cache, batch and tool charges differ; third-party access, regional/tax treatment and current contracts were not checked. Claude app subscriptions do not establish access to these exact models.
- Historical editorial score
- 4.8 / 5 How we score
- Platforms
- API
- Launched
- 2025
- Last verified
- 2026-10-12
