Claude Sonnet 4.5 (batch)
ModelActiveby Anthropic · family “claude-sonnet-batch”
Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with... (description from the OpenRouter listing)
in: textin: imagein: fileout: textReasoningTool useStructured output
Epoch Capabilities Index
Not scored by Epoch AI
Released
29 Sep 2025
Context window
1M tokens
Max output
64K tokens
Input $ / 1M tokens
$1.50
Output $ / 1M tokens
$7.50
Cached input $ / 1M
$0.15
Each benchmark shown separately with its own source
Benchmark results (0)
No benchmark results recorded for this model.
Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.
API list price over time
Price history
$ per 1M tokens
2 observations (OpenRouter listing + Internet Archive snapshots). History accumulates with every ingest run; a single point means no change has been observed yet.
Events
- Model launch12mo agoAnthropic releases Claude Sonnet 4.5 (batch)OpenRouter models API