tokevenGPT · Fast / Budget · 922K context window
GPT 5.6 Luna pricing for copywriting
$0.002500 per call at 500 input / 2,000 output tokens.
Per call
$0.002500
10K calls/mo
$25
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 copywriting spend. Prices verified daily against provider pricing pages.
Configure your usage
Estimated cost
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=2000,
messages=[{"role": "user", "content": "Your prompt here"}]
)
# Cost: ~$0.002500 per call at standard rates
# Input: $0.20/MTok
# Output: $1.20/MTokHow GPT 5.6 Luna compares on cost
Per-call cost for all models scoring 50+ on copywriting benchmarks. Hover for details.
Highest-quality affordable option: Gemini 3.6 Flash at $0.007875/call (3.2x the cost, 76/100 quality). GPT 5.6 Luna is already the cheapest choice for copywriting.
What drives copywriting cost
Creative generation is output-dominated: a one-line brief produces paragraphs. Output rate is the number to compare, and the gap between tiers widens with length. Brand voice guidelines and examples are resent on every call and never change, which makes them the obvious candidate for caching.
For GPT 5.6 Luna specifically, that means output tokens cost 6.0x more than input, at $1.20 vs $0.20 per MTok. At this use case’s 500/2,000 token split, output accounts for 96% of the $0.002500 per-call cost.
Complete GPT 5.6 Luna pricing breakdown
Standard token rates
| Direction | $/MTok | Tokens per call |
|---|---|---|
| Input | $0.20 | 500 |
| Output | $1.20 | 2,000 |
Prompt caching: 90% off input tokens
Caching drops input cost from $0.20 to $0.02/MTok. For repeated system prompts, that saves $0.000090 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 volume | Cost per call | Standard monthly | Cached monthly | You save with caching |
|---|---|---|---|---|
| 10,000 calls | $0.002500 | $25 | $24.1 | $0.9000 |
| 50,000 calls | $0.002500 | $125 | $120.5 | $4.5 |
| 100,000 calls | $0.002500 | $250 | $241 | $9 |
| 500,000 calls | $0.002500 | $1,250 | $1,205 | $45 |
| 1,000,000 calls | $0.002500 | $2,500 | $2,410 | $90 |
GPT 5.6 Luna quality benchmarks for copywriting
Consider alternatives for copywriting
Scores 69/100 (rank #19 of 88). Better options exist at similar price points for copywriting.
Top-ranked: Gemini 3.8 Flash (83/100) at $0.007875/call
Performance across all task types
GPT 5.6 Luna scores by task type. Copywriting highlighted.
| Task type | Confidence score | Rank out of 88 |
|---|---|---|
| Classification | 91/100 | #1 |
| Reasoning | 86/100 | #19 |
| Q&A | 85/100 | #4 |
| Extraction | 74/100 | #13 |
| Creative Writing(current page) | 69/100 | #19 |
| Code Review | 68/100 | #6 |
| Code Generation | 62/100 | #17 |
| Summarization | 57/100 | #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 copywriting
11 models score 80+ on copywriting benchmarks, sorted by input rate. Cheapest: Gemini 3.6 Flash (215% more, 76/100 quality).
| Model | Provider | Input $/MTok | Output $/MTok | Quality | Per call | vs GPT |
|---|---|---|---|---|---|---|
| Gemini 3.6 Flash | Gemini | $0.75 | $3.75 | 76/100 | $0.007875 | 215% more |
| Gemini 3.7 Flash | Gemini | $0.75 | $3.75 | 82/100 | $0.007875 | 215% more |
| Gemini 3.8 Flash | Gemini | $0.75 | $3.75 | 83/100 | $0.007875 | 215% more |
| Gemini 3.5 Flash | Gemini | $1.50 | $9.00 | 75/100 | $0.0188 | 650% more |
| Gemini 3.1 Pro | Gemini | $2.00 | $12.00 | 77/100 | $0.0250 | 900% more |
| Grok 4.6 | Grok | $2.00 | $6.00 | 78/100 | $0.0130 | 420% more |
| Grok 4.7 | Grok | $2.00 | $6.00 | 75/100 | $0.0130 | 420% more |
| GPT 5.4 | GPT | $2.50 | $15.00 | 79/100 | $0.0313 | 1150% more |
| GPT 5.6 Sol | GPT | $4.00 | $20.00 | 76/100 | $0.0420 | 1580% more |
| Claude Opus 4.8 | Claude | $5.00 | $25.00 | 81/100 | $0.0525 | 2000% more |
| Claude Fable 5.1 | Claude | $10.00 | $50.00 | 78/100 | $0.1050 | 4100% more |
About GPT 5.6 Luna
Provider
GPT
Tier
Fast / Budget
Context
922K tokens
Released
Jul 2026
Other models from GPT
| Model | Tier | Input $/MTok | Output $/MTok | Context |
|---|---|---|---|---|
| GPT 5.5 | Flagship | $5.00 | $30.00 | 1.1M |
| GPT 5.4 | Mid-tier | $2.50 | $15.00 | 1.1M |
| GPT 5.6 Sol | Flagship | $4.00 | $20.00 | 922K |
| GPT 5.6 Terra | Mid-tier | $2.00 | $12.00 | 922K |
| GPT 3.5 Turbo | Fast / Budget | $0.50 | $1.50 | 16K |
| GPT 3.5 Turbo (0125) | Fast / Budget | $0.50 | $1.50 | 16K |
| GPT 4 (0613) | Flagship | $30.00 | $60.00 | 8K |
| GPT 4 Turbo (2024-04-09) | Flagship | $10.00 | $30.00 | 128K |
| GPT 4 | Flagship | $30.00 | $60.00 | 8K |
| GPT 4 Turbo | Flagship | $10.00 | $30.00 | 128K |
| GPT 4.1 | Mid-tier | $2.00 | $8.00 | 1.0M |
| GPT 4.1 Mini | Fast / Budget | $0.40 | $1.60 | 1.0M |
| GPT 4.1 Nano | Fast / Budget | $0.10 | $0.40 | 1.0M |
| GPT 4o | Mid-tier | $2.50 | $10.00 | 128K |
| GPT 4o (2024-05-13) | Flagship | $5.00 | $15.00 | 128K |
| GPT 4o Mini | Fast / Budget | $0.15 | $0.60 | 128K |
| GPT 5 | Mid-tier | $1.25 | $10.00 | 272K |
| GPT 5 Mini | Fast / Budget | $0.25 | $2.00 | 272K |
| GPT 5 Nano | Fast / Budget | $0.05 | $0.40 | 272K |
| GPT 5 Pro | Flagship | $15.00 | $120.00 | 400K |
| GPT 5.1 | Mid-tier | $1.25 | $10.00 | 272K |
| GPT 5.2 | Mid-tier | $1.75 | $14.00 | 272K |
| GPT 5.2 Pro | Flagship | $21.00 | $168.00 | 272K |
| GPT 5.4 Mini | Fast / Budget | $0.75 | $4.50 | 272K |
| GPT 5.4 Nano | Fast / Budget | $0.20 | $1.25 | 272K |
| GPT 5.4 Pro | Flagship | $30.00 | $180.00 | 1.1M |
| GPT 5.5 Pro | Flagship | $30.00 | $180.00 | 1.1M |
| GPT 6 Astra | Flagship | $10.00 | $50.00 | 922K |
| GPT 6 Luna | Fast / Budget | $0.10 | $0.50 | 922K |
| GPT 6 Sol | Flagship | $2.00 | $10.00 | 922K |
| o1 | Flagship | $15.00 | $60.00 | 200K |
| o1 Pro | Flagship | $150.00 | $600.00 | 200K |
| o3 | Mid-tier | $2.00 | $8.00 | 200K |
| o3 Mini | Fast / Budget | $1.10 | $4.40 | 200K |
| o3 Pro | Flagship | $20.00 | $80.00 | 200K |
| o4 Mini | Fast / Budget | $1.10 | $4.40 | 200K |
| GPT 6.1 Sol | Flagship | $2.00 | $10.00 | 922K |
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.
GPT 5.6 Luna pricing for other use cases
See how GPT 5.6 Luna costs change across different workload types.
Code Generation
$0.005200/call
Unit Test Generation
$0.006600/call
SQL Generation
$0.001500/call
API Generation
$0.007800/call
Code Refactoring
$0.005600/call
Code Review
$0.003400/call
PR Review
$0.005200/call
Security Review
$0.004200/call
Bug Detection
$0.003400/call
Document Summarization
$0.003200/call
PDF Summarization
$0.004800/call
Meeting Notes
$0.004000/call
Email Summarization
$0.001200/call
Chatbot
$0.001600/call
RAG Pipeline
$0.003000/call
Customer Support Bot
$0.001800/call
FAQ Bot
$0.001260/call
Data Extraction
$0.002000/call
JSON Extraction
$0.001560/call
Invoice Parsing
$0.001120/call
Resume Parsing
$0.001460/call
Chain of Thought
$0.006600/call
Legal Analysis
$0.006800/call
Math Reasoning
$0.003900/call
Financial Analysis
$0.006400/call
Content Moderation
$0.000220/call
Sentiment Analysis
$0.000220/call
Categorization
$0.000340/call
Intent Detection
$0.000180/call
Blog Writing
$0.009800/call
Marketing Copy
$0.003760/call
Product Descriptions
$0.001900/call
Related pages
Frequently asked questions
How much does GPT 5.6 Luna cost for copywriting per API call?
A typical copywriting call using GPT 5.6 Luna costs about $0.002500 per call. This estimate uses 500 input tokens and 2,000 output tokens at standard rates. Standard rates are $0.20 per million input tokens and $1.20 per million output tokens.
Is GPT 5.6 Luna the best model for copywriting?
GPT 5.6 Luna scores 69 out of 100 on copywriting benchmarks overall. It ranks #19 across all 88 models in our cross-provider registry. The highest-ranked model for this task is Gemini 3.8 Flash from Gemini. That model scores 83/100 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 copywriting with good quality?
The most affordable model for copywriting above 80/100 quality is Gemini 3.6 Flash. It comes from Gemini at $0.75 per million input tokens. Output costs $3.75 per million tokens with a quality score of 76/100. Gemini 3.6 Flash costs more per call than GPT 5.6 Luna but scores higher on quality benchmarks for this task type.
How can I reduce my GPT 5.6 Luna costs for copywriting?
Three strategies lower GPT 5.6 Luna 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 $0.002500 to about $0.000125 per call.
How does GPT 5.6 Luna pricing compare to other GPT models?
GPT has 37 other models alongside GPT 5.6 Luna today: GPT 5.5 at $5.00/$30.00 per million tokens (flagship), GPT 5.4 at $2.50/$15.00 per million tokens (mid-tier), GPT 5.6 Sol at $4.00/$20.00 per million tokens (flagship), GPT 5.6 Terra at $2.00/$12.00 per million tokens (mid-tier), GPT 3.5 Turbo at $0.50/$1.50 per million tokens (fast / budget), GPT 3.5 Turbo (0125) at $0.50/$1.50 per million tokens (fast / budget), GPT 4 (0613) at $30.00/$60.00 per million tokens (flagship), GPT 4 Turbo (2024-04-09) at $10.00/$30.00 per million tokens (flagship), GPT 4 at $30.00/$60.00 per million tokens (flagship), GPT 4 Turbo at $10.00/$30.00 per million tokens (flagship), GPT 4.1 at $2.00/$8.00 per million tokens (mid-tier), GPT 4.1 Mini at $0.40/$1.60 per million tokens (fast / budget), GPT 4.1 Nano at $0.10/$0.40 per million tokens (fast / budget), GPT 4o at $2.50/$10.00 per million tokens (mid-tier), GPT 4o (2024-05-13) at $5.00/$15.00 per million tokens (flagship), GPT 4o Mini at $0.15/$0.60 per million tokens (fast / budget), GPT 5 at $1.25/$10.00 per million tokens (mid-tier), GPT 5 Mini at $0.25/$2.00 per million tokens (fast / budget), GPT 5 Nano at $0.05/$0.40 per million tokens (fast / budget), GPT 5 Pro at $15.00/$120.00 per million tokens (flagship), GPT 5.1 at $1.25/$10.00 per million tokens (mid-tier), GPT 5.2 at $1.75/$14.00 per million tokens (mid-tier), GPT 5.2 Pro at $21.00/$168.00 per million tokens (flagship), GPT 5.4 Mini at $0.75/$4.50 per million tokens (fast / budget), GPT 5.4 Nano at $0.20/$1.25 per million tokens (fast / budget), GPT 5.4 Pro at $30.00/$180.00 per million tokens (flagship), GPT 5.5 Pro at $30.00/$180.00 per million tokens (flagship), GPT 6 Astra at $10.00/$50.00 per million tokens (flagship), GPT 6 Luna at $0.10/$0.50 per million tokens (fast / budget), GPT 6 Sol at $2.00/$10.00 per million tokens (flagship), o1 at $15.00/$60.00 per million tokens (flagship), o1 Pro at $150.00/$600.00 per million tokens (flagship), o3 at $2.00/$8.00 per million tokens (mid-tier), o3 Mini at $1.10/$4.40 per million tokens (fast / budget), o3 Pro at $20.00/$80.00 per million tokens (flagship), o4 Mini at $1.10/$4.40 per million tokens (fast / budget), GPT 6.1 Sol at $2.00/$10.00 per million tokens (flagship). The right choice depends on whether your copywriting workload prioritizes quality, cost, or speed.
What context window does GPT 5.6 Luna support?
GPT 5.6 Luna supports a context window of 922K tokens per API call. This sets the maximum combined length of your input prompt and generated response. For copywriting, typical calls use 500 input and 2,000 output tokens. That is well within this limit, leaving room for longer prompts or multi-turn conversations.
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