tokevenClaude Sonnet 4.5
Claude Sonnet 4.5 is Claude's balanced performance model, priced at $3.00/MTok input and $15.00/MTok output with a 200K context window. Added 2026-09-27 after the backfill hold. Prices from the provider pricing page; 200K window (no long-context tier) from the provider context-windows page. Not yet benchmarked, so never recommended.
Input $/MTok
$3.00
Output $/MTok
$15.00
Context window
200K
Cache read discount
90% off
Claude Sonnet 4.5 pricing breakdown
| Rate | Input $/MTok | Output $/MTok |
|---|---|---|
| Standard | $3.00 | $15.00 |
| Cached read (90% off input) | $0.30 | - |
| Cached write (25% surcharge) | $3.75 | - |
| Batch (50% off) | $1.50 | $7.50 |
All rates in USD per million tokens. Prices verified against provider documentation.
Claude Sonnet 4.5 task benchmarks
Confidence scores (0-100) and cross-provider rank for each task type. Rank 1 is best across all 73 models.
Not benchmarked. The third-party benchmark source used for confidence scores does not cover Claude models yet. Scores will appear here once independent benchmarks are published.
Claude Sonnet 4.5 cost by use case
Estimated cost per API call using default token counts for each workload.
| Use case | Input tokens | Output tokens | Cost / call |
|---|---|---|---|
| Code Generation | 2,000 | 4,000 | $0.0660 |
| Unit Test Generation | 3,000 | 5,000 | $0.0840 |
| SQL Generation | 1,500 | 1,000 | $0.0195 |
| API Generation | 3,000 | 6,000 | $0.0990 |
| Code Refactoring | 4,000 | 4,000 | $0.0720 |
| Code Review | 5,000 | 2,000 | $0.0450 |
| PR Review | 8,000 | 3,000 | $0.0690 |
| Security Review | 6,000 | 2,500 | $0.0555 |
| Bug Detection | 5,000 | 2,000 | $0.0450 |
| Document Summarization | 10,000 | 1,000 | $0.0450 |
| PDF Summarization | 15,000 | 1,500 | $0.0675 |
| Meeting Notes | 8,000 | 2,000 | $0.0540 |
Monthly cost projections
Projected monthly spend at different call volumes, using code generation as a representative workload (2,000 input / 4,000 output tokens per call).
| Calls / month | Without caching | With caching (90% read discount) |
|---|---|---|
| 1K | $66 | $62.22 |
| 10K | $660 | $622.2 |
| 100K | $6,600 | $6,222 |
| 500K | $33,000 | $31,110 |
| 1M | $66,000 | $62,220 |
Caching estimate assumes 70% of input tokens are cache reads. Your actual cache hit rate will depend on prompt structure and reuse.
Mid-tier alternatives to Claude Sonnet 4.5
Same-tier models from other providers, sorted by input price.
| Model | Provider | Input $/MTok | Output $/MTok | Input savings |
|---|---|---|---|---|
| GPT 5 | GPT | $1.25 | $10.00 | 58% cheaper |
| GPT 5.1 | GPT | $1.25 | $10.00 | 58% cheaper |
| Gemini 2.5 Pro | Gemini | $1.25 | $10.00 | 58% cheaper |
| Grok 4.3 | Grok | $1.25 | $2.50 | 58% cheaper |
| Grok 4.20 Non-Reasoning | Grok | $1.25 | $2.50 | 58% cheaper |
| Grok 4.20 Reasoning | Grok | $1.25 | $2.50 | 58% cheaper |
| Grok 4.20 Multi-Agent | Grok | $1.25 | $2.50 | 58% cheaper |
| GPT 5.2 | GPT | $1.75 | $14.00 | 42% cheaper |
| GPT 5.6 Terra | GPT | $2.00 | $12.00 | 33% cheaper |
| GPT 4.1 | GPT | $2.00 | $8.00 | 33% cheaper |
| o3 | GPT | $2.00 | $8.00 | 33% cheaper |
| Gemini 3.1 Pro | Gemini | $2.00 | $12.00 | 33% cheaper |
| Gemini 3.1 Pro Custom Tools | Gemini | $2.00 | $12.00 | 33% cheaper |
| GPT 5.4 | GPT | $2.50 | $15.00 | 17% cheaper |
| GPT 4o | GPT | $2.50 | $10.00 | 17% cheaper |
Other Claude models
Claude Haiku 4.5
Fast / Budget / $1.00 in / $5.00 out
Claude Sonnet 5
Mid-tier / $2.00 in / $10.00 out
Claude Sonnet 4.6
Mid-tier / $3.00 in / $15.00 out
Claude Opus 5.5
Flagship / $4.00 in / $20.00 out
Claude Opus 4.8
Flagship / $5.00 in / $25.00 out
Claude Opus 5
Flagship / $5.00 in / $25.00 out
Claude Opus 4.7
Flagship / $5.00 in / $25.00 out
Claude Opus 4.6
Flagship / $5.00 in / $25.00 out
Claude Opus 4.5
Flagship / $5.00 in / $25.00 out
Claude Fable 5.1
Flagship / $10.00 in / $50.00 out
Claude Fable 5
Flagship / $10.00 in / $50.00 out
Claude Mythos 5.1
Flagship / $10.00 in / $50.00 out
Claude Mythos 5
Flagship / $10.00 in / $50.00 out
Track your Claude Sonnet 4.5 spend
See exactly how much you spend on Claude Sonnet 4.5 and where you can save. Two-line wrapper install, no API keys shared.