POST /v1/messagesClaude Sonnet 4.5
claude-sonnet-4.5Claude Sonnet 4.5 is highlighted by Anthropic as a leading coding model and one of the strongest options for complex agents and computer use. Official launch materials also mention gains in reasoning and math. It should be positioned as a high-value workhorse for software teams and agent applications.
Total Context
200Ktokens
Max Output
64Ktokens
Released
Sep 29, 2025
Modalities
Claude Sonnet 4.5 Price
| Token Tier | Input Price | Output Price | Cache Read | Cache Create 5m |
|---|---|---|---|---|
| <=200K | $3/M | $15/M | $0.3/M | $3.75/M |
| >200K | $6/M | $22.5/M | $0.6/M | $7.5/M |
Claude Sonnet 4.5 API
Frequently asked questions about Claude Sonnet 4.5
Understand what Claude Sonnet 4.5 is, its best uses, distinguishing strengths, practical tradeoffs, and safe TokenHub integration guidance.
What kind of model is Claude Sonnet 4.5?+
Claude Sonnet 4.5 is a previous Sonnet generation known for coding, computer use, and complex agent workflows. It remains a defined model generation, but newer models in the same family may be preferable for new evaluations.
What should teams use Claude Sonnet 4.5 for?+
Best-fit scenarios include agentic coding and repository work, computer-use and interface automation, and knowledge work across business documents. Test representative inputs and define measurable acceptance criteria before production.
Where does Claude Sonnet 4.5 have a clear technical advantage?+
Key strengths include strong coding performance, planning across multi-step agent tasks, and strict instruction following. This combination is especially useful for computer-use and interface automation.
When should a team choose another model instead of Claude Sonnet 4.5?+
Consider another model when the project can move to the newer Sonnet generation, the task needs the strongest Opus-level capability, or the workflow cannot include human review for important decisions. Run generated code through tests, security checks, and human review before merging or deployment.
What should be checked before integrating Claude Sonnet 4.5 with TokenHub?+
In TokenHub, select the exact model identifier displayed for Claude Sonnet 4.5, use the endpoint documented for your account, and authenticate with your TokenHub credentials. Check the TokenHub model page for the available Claude features, context limits, tool support, and current model status for your account.
Media and Discussions
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