GPT · Fast / Budget · 1,000K context window

GPT 5.6 Luna pricing for code refactoring

$0.0280 per call at 4,000 input / 4,000 output tokens.

Per call

$0.0280

10K calls/mo

$280

Cache savings

90% off input

Batch savings

50% off all

Calculate your GPT 5.6 Luna costs

Adjust token counts, volume, and discount toggles to model your code refactoring spend. Pricing updated weekly.

Configure your usage

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

Estimated cost

Monthly cost
$280
10,000 calls/month
Cost per call$0.028
Daily cost$9
Input rate$1.00/MTok
Output rate$6.00/MTok
Analyze your real spend

Quick start

Call GPT 5.6 Luna with the OpenAI Python SDK:

from openai import OpenAI

client = OpenAI()
response = client.chat.completions.create(
    model="gpt-5.6-luna",
    max_tokens=4000,
    messages=[{"role": "user", "content": "Your prompt here"}]
)
# Cost: ~$0.0280 per call at standard rates
# Input:  $1.00/MTok
# Output: $6.00/MTok

How GPT 5.6 Luna compares on cost

Per-call cost for all models scoring 50+ on code refactoring benchmarks. Hover for details.

Cheapest viable option: Claude Sonnet 5 at $0.0480/call (-71% less, 93/100 quality).

Complete GPT 5.6 Luna pricing breakdown

Standard token rates

Direction$/MTokTokens per call
Input$1.004,000
Output$6.004,000

Prompt caching: 90% off input tokens

Caching drops input cost from $1.00 to $0.10/MTok. For repeated system prompts, that saves $0.003600 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$0.0280$280$244$36
50,000 calls$0.0280$1,400$1,220$180
100,000 calls$0.0280$2,800$2,440$360
500,000 calls$0.0280$14,000$12,200$1,800
1,000,000 calls$0.0280$28,000$24,400$3,600

GPT 5.6 Luna quality benchmarks for code refactoring

Consider alternatives for code refactoring

Scores 70/100 (rank #6 of 14). Better options exist at similar price points for code refactoring.

Top-ranked: Claude Fable 5 (96/100) at $0.2400/call

Performance across all task types

GPT 5.6 Luna scores by task type. Code Refactoring highlighted.

Classification91Extraction89Q&A85Summarization84Code Generation *70Code Review68Reasoning63Creative Writing58
Task typeConfidence scoreRank out of 14
Classification91/100#1
Extraction89/100#2
Q&A85/100#4
Summarization84/100#4
Code Generation(current page)70/100#6
Code Review68/100#6
Reasoning63/100#6
Creative Writing58/100#7

Alternative models for code refactoring

9 models score 80+ on code refactoring benchmarks, sorted by input rate. Cheapest: Claude Sonnet 5 (-71% less, 93/100 quality).

ModelProviderInput $/MTokOutput $/MTokQualityPer callvs GPT
Claude Sonnet 5Claude$2.00$10.0093/100$0.048071% more
Gemini 3.1 ProGemini$2.00$12.0086/100$0.0560100% more
GPT 5.4GPT$2.50$15.0084/100$0.0700150% more
GPT 5.6 TerraGPT$2.50$15.0086/100$0.0700150% more
Claude Sonnet 4.6Claude$3.00$15.0092/100$0.0720157% more
Claude Opus 4.8Claude$5.00$25.0095/100$0.1200329% more
GPT 5.5GPT$5.00$30.0091/100$0.1400400% more
GPT 5.6 SolGPT$5.00$30.0094/100$0.1400400% more
Claude Fable 5Claude$10.00$50.0096/100$0.2400757% more

About GPT 5.6 Luna

Provider

GPT

Tier

Fast / Budget

Context

1,000K tokens

Released

Jul 2026

Other models from GPT

ModelTierInput $/MTokOutput $/MTokContext
GPT 5.5Flagship$5.00$30.00128K
GPT 5.4Mid-tier$2.50$15.00128K
GPT 5.6 SolFlagship$5.00$30.001,000K
GPT 5.6 TerraMid-tier$2.50$15.001,000K

You can compare GPT 5.6 Luna 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 GPT 5.6 Luna cost for code refactoring per API call?

$0.0280 per call at 4,000 input / 4,000 output tokens.

Is GPT 5.6 Luna the best model for code refactoring?

Scores 70/100, rank #6 of 14 models. Top-ranked: Claude Fable 5 at 96/100.

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

Claude Sonnet 5 scores 93/100 quality at $2.00/$10.00 per MTok. That is -71% less than GPT 5.6 Luna per call.

How can I reduce my GPT 5.6 Luna costs for code refactoring?

Three strategies: prompt caching (90% off input), batch API (50% off all tokens), prompt optimization. Combined: $0.0280 drops to about $0.001400 per call.

How does GPT 5.6 Luna pricing compare to other GPT models?

GPT also offers: GPT 5.5 at $5.00/$30.00, GPT 5.4 at $2.50/$15.00, GPT 5.6 Sol at $5.00/$30.00, GPT 5.6 Terra at $2.50/$15.00.

What context window does GPT 5.6 Luna support?

1,000K tokens total. Typical code refactoring calls use 4,000 plus 4,000 tokens, well within limits.

Track what you spend on AI

This calculator estimates costs based on published rates only. Connect your API usage to see where your money goes and which models drive your spend.