Which is cheaper for input tokens: Anthropic: Claude 3.5 Sonnet or Anthropic: Claude Opus 4.5?
Anthropic: Claude Opus 4.5 is cheaper on input token cost by $1.00 per 1M tokens.
Head-to-Head Pricing Benchmark
Anthropic: Claude 3.5 Sonnet vs Anthropic: Claude Opus 4.5
Side-by-side pricing and context window comparison for production model selection.
Input delta: $1.00Output delta: $5.00Monthly delta: $420
Default Recommendation (120M input + 60M output)
Anthropic: Claude Opus 4.5 is lower-cost for the default monthly workload scenario.
Adjust the workload in the calculator below to see a live recommendation for your usage.
| Metric | Anthropic: Claude 3.5 Sonnet | Anthropic: Claude Opus 4.5 |
|---|---|---|
| Developer | anthropic | anthropic |
| Context Window | 200,000 | 200,000 |
| Input Cost / 1M Tokens | $6.00 | $5.00 |
| Output Cost / 1M Tokens | $30.00 | $25.00 |
| Projected Monthly Cost | $2,520 | $2,100 |
| Vision | ✅ Yes | ✅ Yes |
| Tool Calling | ✅ Yes | ✅ Yes |
| Structured Output | ❌ No | ✅ Yes |
| Reasoning | ❌ No | ✅ Yes |
| MMLU Score | N/A | 69.6 |
| GPQA | N/A | 48.9 |
Price History
Anthropic: Claude 3.5 Sonnet Pricing Trend
Input / 1M tokens0.0%Output / 1M tokens0.0%
Mar 7 — Mar 11
Current Input / 1M
$6.00
Current Output / 1M
$30.00
Price History
Anthropic: Claude Opus 4.5 Pricing Trend
Input / 1M tokens0.0%Output / 1M tokens0.0%
Mar 7 — Mar 11
Current Input / 1M
$5.00
Current Output / 1M
$25.00
Cost Calculator
Adjust your workload to see projected monthly costs.
01.0B
0500M
Anthropic: Claude 3.5 Sonnet
$2,520
per month
Anthropic: Claude Opus 4.5
$2,100
per month
Lower costLive Recommendation
Anthropic: Claude Opus 4.5 is lower-cost at 120M input + 60M output tokens/month.
Anthropic: Claude Opus 4.5 saves $420/mo at this workload
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FAQ
Common questions for Anthropic: Claude 3.5 Sonnet vs Anthropic: Claude Opus 4.5 pricing decisions.
Which is cheaper for output tokens: Anthropic: Claude 3.5 Sonnet or Anthropic: Claude Opus 4.5?
Anthropic: Claude Opus 4.5 is cheaper on output token cost by $5.00 per 1M tokens.
What is the projected monthly cost difference between Anthropic: Claude 3.5 Sonnet and Anthropic: Claude Opus 4.5?
$420 difference for the default scenario (120M input + 60M output tokens/month).
How should I choose between Anthropic: Claude 3.5 Sonnet and Anthropic: Claude Opus 4.5?
Use this page to compare context window and token pricing, then open each model page to evaluate additional alternatives and monthly workload fit.