Claude · Mid-tier · 1M context window

Claude Sonnet 5 pricing for code refactoring

$0.0480 per call at 4,000 input / 4,000 output tokens.

Per call

$0.0480

10K calls/mo

$480

Cache savings

90% off input

Batch savings

50% off all

Calculate your Claude Sonnet 5 costs

Adjust token counts, volume, and discount toggles to model your code refactoring spend. Prices verified daily against provider pricing pages.

Configure your usage

4,000
100100K
4,000
5050K
10,000
1001M

Estimated cost

Monthly cost
$480
10,000 calls/month
Cost per call$0.048
Daily cost$16
Input rate$2.00/MTok
Output rate$10.00/MTok
Analyze your real spend

Quick start

Call Claude Sonnet 5 with the Anthropic Python SDK:

from anthropic import Anthropic

client = Anthropic()
response = client.messages.create(
    model="claude-sonnet-5",
    max_tokens=4000,
    messages=[{"role": "user", "content": "Your prompt here"}]
)
# Cost: ~$0.0480 per call at standard rates
# Input:  $2.00/MTok
# Output: $10.00/MTok

What drives code refactoring cost

Refactoring sends existing code and gets a rewritten version back, so input and output are roughly symmetric, unusual for a code task. That symmetry means neither rate dominates and total cost tracks the size of the file. The practical lever is scope: refactoring one module per call rather than a whole package keeps you off the long-context pricing tier, where some providers re-rate the entire request.

For Claude Sonnet 5 specifically, that means output tokens cost 5.0x more than input, at $10.00 vs $2.00 per MTok. At this use case’s 4,000/4,000 token split, output accounts for 83% of the $0.0480 per-call cost.

Complete Claude Sonnet 5 pricing breakdown

Standard token rates

Direction$/MTokTokens per call
Input$2.004,000
Output$10.004,000

Prompt caching: 90% off input tokens

Caching drops input cost from $2.00 to $0.20/MTok. For repeated system prompts, that saves $0.007200 per call.

Batch API: 50% off all tokens

Submit requests asynchronously and receive 50% off all token costs. This works best for offline pipelines where latency requirements are flexible.

Monthly cost projections

Monthly volumeCost per callStandard monthlyCached monthlyYou save with caching
10,000 calls$0.0480$480$408$72
50,000 calls$0.0480$2,400$2,040$360
100,000 calls$0.0480$4,800$4,080$720
500,000 calls$0.0480$24,000$20,400$3,600
1,000,000 calls$0.0480$48,000$40,800$7,200

Claude Sonnet 5 quality benchmarks for code refactoring

Consider alternatives for code refactoring

Scores 68/100 (rank #5 of 88). Better options exist at similar price points for code refactoring.

Top-ranked: Claude Opus 5.5 (79/100) at $0.0960/call

Performance across all task types

Claude Sonnet 5 scores by task type. Code Refactoring highlighted.

Code Review96Q&A89Reasoning89Classification86Extraction70Code Generation *68Summarization64Creative Writing62
Task typeConfidence scoreRank out of 88
Code Review96/100#1
Q&A89/100#2
Reasoning89/100#10
Classification86/100#3
Extraction70/100#28
Code Generation(current page)68/100#5
Summarization64/100#22
Creative Writing62/100#29

Confidence scores are a third-party benchmark snapshot from week 26 of 2026. This snapshot is 17 weeks old, so treat the scores as directional and validate against your own evals.

Alternative models for code refactoring

5 models score 80+ on code refactoring benchmarks, sorted by input rate. Cheapest: Claude Haiku 4.5 (50% less, 72/100 quality).

ModelProviderInput $/MTokOutput $/MTokQualityPer callvs Claude
Claude Haiku 4.5Claude$1.00$5.0072/100$0.024050% cheaper
Claude Opus 5.5Claude$4.00$20.0079/100$0.0960100% more
Claude Opus 5Claude$5.00$25.0072/100$0.1200150% more
Claude Fable 5.1Claude$10.00$50.0074/100$0.2400400% more
Claude Fable 5Claude$10.00$50.0072/100$0.2400400% more

About Claude Sonnet 5

Provider

Claude

Tier

Mid-tier

Context

1M tokens

Released

Jun 2026

Launched at $2/$10 as introductory pricing through Aug 31, 2026. Anthropic cancelled the scheduled increase to $3/$15, so this is now the standard price.

Other models from Claude

ModelTierInput $/MTokOutput $/MTokContext
Claude Opus 4.8Flagship$5.00$25.001M
Claude Sonnet 4.6Mid-tier$3.00$15.001M
Claude Haiku 4.5Fast / Budget$1.00$5.00200K
Claude Opus 5Flagship$5.00$25.001M
Claude Fable 5.1Flagship$10.00$50.001M
Claude Fable 5Flagship$10.00$50.001M
Claude Mythos 5.1Flagship$10.00$50.001M
Claude Mythos 5Flagship$10.00$50.001M
Claude Opus 4.7Flagship$5.00$25.001M
Claude Opus 4.6Flagship$5.00$25.001M
Claude Opus 4.5Flagship$5.00$25.00200K
Claude Opus 5.5Flagship$4.00$20.001M
Claude Sonnet 4.5Mid-tier$3.00$15.00200K
Claude Sonnet 5.5Mid-tier$2.00$10.001M
Claude Haiku 5.5Fast / Budget$0.10$0.501M

You can compare Claude Sonnet 5 head-to-head against any other model on our model comparison pages, or track how pricing has changed over time on the pricing history tracker.

Frequently asked questions

How much does Claude Sonnet 5 cost for code refactoring per API call?

A typical code refactoring call using Claude Sonnet 5 costs about $0.0480 per call. This estimate uses 4,000 input tokens and 4,000 output tokens at standard rates. Standard rates are $2.00 per million input tokens and $10.00 per million output tokens.

Is Claude Sonnet 5 the best model for code refactoring?

Claude Sonnet 5 scores 68 out of 100 on code refactoring benchmarks overall. It ranks #5 across all 88 models in our cross-provider registry. The highest-ranked model for this task is Claude Opus 5.5 from Claude. That model scores 79/100 on this task type. Confidence scores are a third-party benchmark snapshot from week 26 of 2026. This snapshot is 17 weeks old, so treat the scores as directional and validate against your own evals.

What is the cheapest model for code refactoring with good quality?

The most affordable model for code refactoring above 80/100 quality is Claude Haiku 4.5. It comes from Claude at $1.00 per million input tokens. Output costs $5.00 per million tokens with a quality score of 72/100. Switching from Claude Sonnet 5 to Claude Haiku 4.5 saves about 50% per API call.

How can I reduce my Claude Sonnet 5 costs for code refactoring?

Three strategies lower Claude Sonnet 5 costs for this task type effectively. Prompt caching gives a 90% discount on input tokens when reusing system prompts. The batch API gives 50% off all tokens for asynchronous processing workloads. Prompt optimization reduces token counts through more concise instructions and context windows. Combining caching with batching brings your cost from $0.0480 to about $0.002400 per call.

How does Claude Sonnet 5 pricing compare to other Claude models?

Claude has 15 other models alongside Claude Sonnet 5 today: Claude Opus 4.8 at $5.00/$25.00 per million tokens (flagship), Claude Sonnet 4.6 at $3.00/$15.00 per million tokens (mid-tier), Claude Haiku 4.5 at $1.00/$5.00 per million tokens (fast / budget), Claude Opus 5 at $5.00/$25.00 per million tokens (flagship), Claude Fable 5.1 at $10.00/$50.00 per million tokens (flagship), Claude Fable 5 at $10.00/$50.00 per million tokens (flagship), Claude Mythos 5.1 at $10.00/$50.00 per million tokens (flagship), Claude Mythos 5 at $10.00/$50.00 per million tokens (flagship), Claude Opus 4.7 at $5.00/$25.00 per million tokens (flagship), Claude Opus 4.6 at $5.00/$25.00 per million tokens (flagship), Claude Opus 4.5 at $5.00/$25.00 per million tokens (flagship), Claude Opus 5.5 at $4.00/$20.00 per million tokens (flagship), Claude Sonnet 4.5 at $3.00/$15.00 per million tokens (mid-tier), Claude Sonnet 5.5 at $2.00/$10.00 per million tokens (mid-tier), Claude Haiku 5.5 at $0.10/$0.50 per million tokens (fast / budget). The right choice depends on whether your code refactoring workload prioritizes quality, cost, or speed.

What context window does Claude Sonnet 5 support?

Claude Sonnet 5 supports a context window of 1M tokens per API call. This sets the maximum combined length of your input prompt and generated response. For code refactoring, typical calls use 4,000 input and 4,000 output tokens. That is well within this limit, leaving room for longer prompts or multi-turn conversations.

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