Claude Sonnet 4.6
$679.50 / month- Input cost
- $409.50
- Output cost
- $270.00
- Per 1,000 calls
- $67.95
- Pricing profile
- standard
Source-tracked model comparison
Claude Sonnet 5 vs Sonnet 4.6: what changes in API cost for code review?
Compare verified pricing and model limits for upgrading a Claude Sonnet code-review workflow. The cost example uses a code review assistant workload and does not assume equal model quality.
Direct cost answer: Claude Sonnet 4.6 is estimated at $679.50 per month and Claude Sonnet 5 at $453.00 for 15,000 input tokens, 1,800 output tokens, and 10,000 monthly requests. Claude Sonnet 5 is $226.50 lower under these assumptions. This does not identify a quality winner.
Tracked facts
Pricing and model limits
Prices are USD per 1M tokens under each model's verified default profile.
| Field | Claude Sonnet 4.6 | Claude Sonnet 5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| API model ID | claude-sonnet-4-6 | claude-sonnet-5 |
| Input / 1M | $3.00 | $2.00 |
| Cached input / 1M | $0.30 | $0.20 |
| Output / 1M | $15.00 | $10.00 |
| Context window | 1,000,000 tokens | 1,000,000 tokens |
| Maximum output | 128,000 tokens | 128,000 tokens |
| Accepted input | text, image | text, image |
Example workload
Code review assistant cost scenario
15,000 input and 1,800 output tokens per request, 10,000 monthly requests, and 10% cached input.
Claude Sonnet 5
$453.00 / month- Input cost
- $273.00
- Output cost
- $180.00
- Per 1,000 calls
- $45.30
- Pricing profile
- standard
Cost result: Claude Sonnet 5 is $226.50 lower per month for these assumptions. This is a price comparison, not a model-quality ranking.
Questions to answer before choosing
- Which review cases improve enough to warrant migration?
- Can the existing prompt and tool flow stay unchanged?
- How do retries and output length affect the upgrade cost?
What this estimate leaves out
This scenario does not claim equal review quality and excludes code indexing, sandbox, and repository-hosting costs.
Latency, reliability, output quality, retries, regional processing, and provider-specific tool charges can change the practical decision.
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