Claude Sonnet 4.5 spotted on VoxelBench
Claude Sonnet 4.5 is a model from Anthropic, released on 29 Sep 2025. First seen 14 Sep 2026. Catalogues list a 200,000 tokens context window. 12 evidence links.
Facts as of
- Context window
- 200,000
- Input · USD / 1M tokens
- $3.00
- Output · USD / 1M tokens
- $15.00
- Max output
- 64,000
- Input
- text · image
- Output
- text
- Cached input · USD / 1M tokens
- $0.30
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 12
- VoxelBench · leaderboardevidence linkvoxelbench.ai
- models.dev · catalogueevidence linkmodels.dev
- OpenCode · discoveryevidence linkopencode.ai
- Vertex AI · Model Gardenevidence linkconsole.cloud.google.com
- models.dev · catalogueevidence linkmodels.dev
- Azure Foundry · lifecycleevidence linklearn.microsoft.com
- AWS Bedrock · lifecycleevidence linkdocs.aws.amazon.com
- Vercel AI Gatewayevidence linkvercel.com
- models.dev · catalogueevidence linkmodels.dev
- 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