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Claude Sonnet 4.5 (latest)
anthropic·anthropic/claude-sonnet-4-5·GA·Closed·claude-sonnet series
Balanced Claude model for coding, analysis, agent workflows, and cost control
At a glance
Official price$3.00 / $15.00 per 1M
Cache read $0.30 · Anthropic
Lowest paid$2.70 / $13.50
Requesty Gateway · 1.1× spread
Context1,000,000
⚠ Providers report 200,000–1,000,000; the table below is authoritative
Output limit64,000
Capabilities
✓ Reasoning✓ Tool use✓ Structured output✓ Temperature✓ Attachments
Modalities
TextImagePDF
Knowledge cutoff2025-07-31
Released / updated2025-09-29 / 2025-09-29
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 17 providers15 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| Requesty | Gateway | $2.70 tiered >200K: $5.40 | $13.50 | $0.27 | $3.38 | 1,000,000 | 64,000 | |
| Cortecs claude-4-5-sonnet | Gateway | $2.99 | $14.95 | $0.326 | $4.08 | 200,000 ⚠ | 200,000 | |
| OrcaRouter anthropic/claude-sonnet-4.5 | Gateway | $3.00 | $15.00 | $0.30 | $3.75 | 200,000 ⚠ | 64,000 | |
| Impossibl | Gateway | $3.00 | $15.00 | $0.30 | $3.75 | 200,000 ⚠ | 64,000 | |
| OpenRouter anthropic/claude-sonnet-4.5 | Gateway | $3.00 tiered >200K: $6.00 | $15.00 | $0.30 | $3.75 | 1,000,000 | 64,000 | |
| AnthropicOfficial | First-party | $3.00 | $15.00 | $0.30 | $3.75 | 1,000,000 | 64,000 | |
| Databricks databricks-claude-sonnet-4-5 | Cloud | $3.00 | $15.00 | $0.30 | $3.75 | 200,000 ⚠ | 64,000 | |
| Cloudflare AI Gateway anthropic/claude-sonnet-4.5 | Cloud | $3.00 | $15.00 | $0.30 | $3.75 | 1,000,000 | 64,000 | |
| Ofox anthropic/claude-sonnet-4.5 | Gateway | $3.00 | $15.00 | $0.30 | $3.75 | 200,000 ⚠ | 64,000 | |
| Neon | Cloud | $3.00 | $15.00 | $0.30 | $3.75 | 200,000 ⚠ | 64,000 | |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
1Requesty$923.40
2Cortecs$1,025.49
3OrcaRouter$1,026.00
4Impossibl$1,026.00
5OpenRouter$1,026.00
6Anthropic · Official$1,026.00
Switch to Requesty to save $102.60/mo (10%). The gap is small, so staying on the official channel is fine.
Note: this is a gateway; verify availability and rate limits yourself.
Benchmark1 items
| Name | Conditions | Score | Metric | Source |
|---|---|---|---|---|
| SWE-Bench Pro | dataset: public | 43.6 | resolve rate | Source ↗ |
The same benchmark scores very differently across harness / dataset, so the qualifying conditions must be shown together.
Reasoning control
effort = noneeffort = loweffort = mediumeffort = higheffort = maxbudget_tokens ≥ 1,024 ≤ 63,999Toggle (on / off)effort = xhigh
1 / 17 providers expose no reasoning control (reasoning_options: []).
Related models
Claude Sonnet 5same series$2.00 / $10.00Claude Sonnet 5 Thinkingsame series$2.00 / $10.00Claude Sonnet 5 (JP)same series$2.00 / $10.00GLM-5.2cheaper alternative$1.40 / $4.40DeepSeek V4 Procheaper alternative$0.435 / $0.87DeepSeek V4 Flashcheaper alternative$0.14 / $0.28DeepSeek V4 Flash 0731cheaper alternative$0.479 / $1.44
Price historyone sample accumulated per data sync
Input listOutput listMin blended