Claude Opus 4.5 spotted on models.dev
Claude Opus 4.5 is a model from Anthropic, released on 24 Nov 2025. First seen 15 Sep 2026. Catalogues list a 200,000 tokens context window. 8 evidence links.
Facts as of
- Context window
- 200,000
- Input · USD / 1M tokens
- $5.00
- Output · USD / 1M tokens
- $25.00
- Max output
- 64,000
- Input
- text · image
- Output
- text
- Cached input · USD / 1M tokens
- $0.50
Alex's take
Alex has not commented on this signal yet. When Alex posts about a signal, the post appears here and on the home page beside it.
Evidence links 8
- models.dev · catalogueevidence linkmodels.dev
- OpenCode · discoveryevidence linkopencode.ai
- Azure Foundry · lifecycleevidence linklearn.microsoft.com
- Artificial Analysis · benchmarksevidence linkartificialanalysis.ai
- Vercel AI Gatewayevidence linkvercel.com
- models.dev · catalogueevidence linkmodels.dev
- Arena · leaderboardsevidence linkanthropic.com
- Anthropic · model indexevidence linkplatform.claude.com
Related signals
AnthropicSightingClaude Haiku 5.5 (Max, Default Fallback) enters at 43.4 on the Intelligence Index
Confirmed20 evidence links