Claims and evidence
- Released Primary source[1]
- Deprecated Primary source[3]2024-09-04: Claude 1 and Instant models [4]September 4th, 2024
- Retired Primary source[3]2024-09-04: Claude 1 and Instant models [4]November 6th, 2024
- Status Retired Primary source[3]2024-09-04: Claude 1 and Instant models
- Context window 100K tokensRaised from 9K to 100K tokens in the API on 2023-05-11, per the source; not stated in the launch post. Primary source[2]
- Parameters Not disclosedNot disclosed by Anthropic. No claim madeNo source
- Access API, cloud partner Primary source[1] [5]Claude 1.3 on Amazon Bedrock since its April 2023 launch
Lineage
Predecessors
No known predecessor.
Successors
- Claude 2 · 11 July 2023
Based on
Not derived from another model.
Variants and derived
None recorded.
Siblings
None recorded.
All ancestors
None.
All descendants
- Claude 2 · 11 July 2023
- Claude 2.1 · 21 November 2023
- Claude 3 Opus · 4 March 2024
- Claude 3 Sonnet · 4 March 2024
- Claude 3.5 Sonnet · 20 June 2024
- Claude 3.5 Sonnet (New) · 22 October 2024
- Claude 3.7 Sonnet · 24 February 2025
- Claude Opus 4 · 22 May 2025
- Claude Sonnet 4 · 22 May 2025
- Claude Opus 4.1 · 5 August 2025
- Claude Sonnet 4.5 · 29 September 2025
- Claude Opus 4.5 · 24 November 2025
- Claude Opus 4.6 · 5 February 2026
- Claude Sonnet 4.6 · 17 February 2026
- Claude Opus 4.7 · 16 April 2026
- Claude Opus 4.8 · 28 May 2026
- Claude Sonnet 5 · 30 June 2026
- Claude Opus 5 · 24 July 2026
- Claude Opus 5.5 · 22 September 2026
- Claude Sonnet 5.5 · 28 September 2026
Variants
No variants recorded in this record.
Related AI Radar coverage
AI Radar coverage starts in June 2026; no coverage linked yet.