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Anthropic Intermediate

Claude 3.5 Sonnet

Claude 3.5 Sonnet was Anthropic's 200K-context multimodal Sonnet generation. Both API versions were retired on October 28, 2025.

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In plain English

What is this model and why does it matter?

Claude 3.5 Sonnet was Anthropic's 200K-context multimodal Sonnet generation for coding, vision and tool use; its API versions were retired in October 2025.

Historical Claude integrationsMigration planningCoding-model historyVision and agent research
Model overview

Claude 3.5 Sonnet: features, use cases and important details

Claude 3.5 Sonnet was Anthropic’s 2024 Sonnet generation, initially launched in June and upgraded in October.

Verified model facts

Anthropic documented a 200K context window, text and image input, strong coding performance and later experimental computer-use support.

Current status

Anthropic retired both Claude 3.5 Sonnet API model IDs on October 28, 2025.

Best fit

The page remains valuable for migration guidance, coding-model history and historical multimodal comparison.

Limitations

It is not a current API option, historical pricing is obsolete, and partner platforms can have different retirement schedules.

Get started

How to use this model

  1. Do not start a new Claude 3.5 Sonnet integration.
  2. Check Anthropic's model deprecation page.
  3. Migrate to a supported Claude Sonnet model.
  4. Retest tool use and prompts.
  5. Remove old 3.5 pricing from current documentation.
Copy and try

Example prompts

  • Historical example: analyze this screenshot and explain the issue.
  • Historical example: review this codebase and propose a fix.
Capabilities

What it can do

  • 200K context
  • Text and image input
  • Coding
  • Tool use
  • Computer-use research
Best for

Practical use cases

  • Historical reference
  • Migration planning
  • Model comparison
Pricing

What does it cost?

Retired on Anthropic-operated platforms. Historical $3/M input and $15/M output pricing is not a current service price.

Simple summaryNo current Anthropic API price applies because both Claude 3.5 Sonnet model IDs are retired.

What stands out

  • Historically strong coding and vision performance
  • 200K context
  • Important computer-use milestone

Things to consider

  • Retired API models
  • No new Anthropic integration
  • Historical prices obsolete
Limitations

Important restrictions and trade-offs

  • Requests to retired Anthropic model IDs fail
  • Partner-platform retirement dates can differ
  • Historical capabilities should not be described as current availability
SimplifyAITools verdict

Our editorial take

Keep as an important historical Claude profile, but make its October 2025 retirement unmistakable.

References

Primary sources

  1. Open source 1 ↗
  2. Open source 2 ↗
  3. Open source 3 ↗
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