GPT · Fast / Budget · 1,000K context window
$0.006300 per call at 1,500 input / 800 output tokens.
Per call
$0.006300
10K calls/mo
$63
Cache savings
90% off input
Batch savings
50% off all
Adjust token counts, volume, and discount toggles to model your faq bot spend. Pricing updated weekly.
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=800,
messages=[{"role": "user", "content": "Your prompt here"}]
)
# Cost: ~$0.006300 per call at standard rates
# Input: $1.00/MTok
# Output: $6.00/MTokPer-call cost for all models scoring 50+ on faq bot benchmarks. Hover for details.
Cheapest viable option: Gemini 3 Flash at $0.003150/call (50% less, 82/100 quality).
| Direction | $/MTok | Tokens per call |
|---|---|---|
| Input | $1.00 | 1,500 |
| Output | $6.00 | 800 |
Caching drops input cost from $1.00 to $0.10/MTok. For repeated system prompts, that saves $0.001350 per call.
Submit requests asynchronously and receive 50% off all token costs. This works best for offline pipelines where latency requirements are flexible.
| Monthly volume | Cost per call | Standard monthly | Cached monthly | You save with caching |
|---|---|---|---|---|
| 10,000 calls | $0.006300 | $63 | $49.5 | $13.5 |
| 50,000 calls | $0.006300 | $315 | $247.5 | $67.5 |
| 100,000 calls | $0.006300 | $630 | $495 | $135 |
| 500,000 calls | $0.006300 | $3,150 | $2,475 | $675 |
| 1,000,000 calls | $0.006300 | $6,300 | $4,950 | $1,350 |
GPT 5.6 Luna is a solid pick for faq bot
Scores 85/100 (rank #4 of 14). Good balance of quality and cost for faq bot.
Top-ranked: GPT 5.6 Terra (92/100) at $0.0158/call
GPT 5.6 Luna scores by task type. FAQ Bot highlighted.
| Task type | Confidence score | Rank out of 14 |
|---|---|---|
| Classification | 91/100 | #1 |
| Extraction | 89/100 | #2 |
| Q&A(current page) | 85/100 | #4 |
| Summarization | 84/100 | #4 |
| Code Generation | 70/100 | #6 |
| Code Review | 68/100 | #6 |
| Reasoning | 63/100 | #6 |
| Creative Writing | 58/100 | #7 |
12 models score 80+ on faq bot benchmarks, sorted by input rate. Cheapest: Gemini 3 Flash (50% less, 82/100 quality).
| Model | Provider | Input $/MTok | Output $/MTok | Quality | Per call | vs GPT |
|---|---|---|---|---|---|---|
| Gemini 3 Flash | Gemini | $0.50 | $3.00 | 82/100 | $0.003150 | 50% cheaper |
| Claude Haiku 4.5 | Claude | $1.00 | $5.00 | 86/100 | $0.005500 | 13% cheaper |
| Gemini 3.5 Flash | Gemini | $1.50 | $9.00 | 84/100 | $0.009450 | 50% more |
| Claude Sonnet 5 | Claude | $2.00 | $10.00 | 89/100 | $0.0110 | 75% more |
| Gemini 3.1 Pro | Gemini | $2.00 | $12.00 | 87/100 | $0.0126 | 100% more |
| GPT 5.4 | GPT | $2.50 | $15.00 | 91/100 | $0.0158 | 150% more |
| GPT 5.6 Terra | GPT | $2.50 | $15.00 | 92/100 | $0.0158 | 150% more |
| Claude Sonnet 4.6 | Claude | $3.00 | $15.00 | 88/100 | $0.0165 | 162% more |
| Claude Opus 4.8 | Claude | $5.00 | $25.00 | 85/100 | $0.0275 | 337% more |
| GPT 5.5 | GPT | $5.00 | $30.00 | 90/100 | $0.0315 | 400% more |
| GPT 5.6 Sol | GPT | $5.00 | $30.00 | 91/100 | $0.0315 | 400% more |
| Claude Fable 5 | Claude | $10.00 | $50.00 | 88/100 | $0.0550 | 773% more |
Provider
GPT
Tier
Fast / Budget
Context
1,000K tokens
Released
Jul 2026
| Model | Tier | Input $/MTok | Output $/MTok | Context |
|---|---|---|---|---|
| GPT 5.5 | Flagship | $5.00 | $30.00 | 128K |
| GPT 5.4 | Mid-tier | $2.50 | $15.00 | 128K |
| GPT 5.6 Sol | Flagship | $5.00 | $30.00 | 1,000K |
| GPT 5.6 Terra | Mid-tier | $2.50 | $15.00 | 1,000K |
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.
See how GPT 5.6 Luna costs change across different workload types.
Code Generation
$0.0260/call
Unit Test Generation
$0.0330/call
SQL Generation
$0.007500/call
API Generation
$0.0390/call
Code Refactoring
$0.0280/call
Code Review
$0.0170/call
PR Review
$0.0260/call
Security Review
$0.0210/call
Bug Detection
$0.0170/call
Document Summarization
$0.0160/call
PDF Summarization
$0.0240/call
Meeting Notes
$0.0200/call
Email Summarization
$0.006000/call
Chatbot
$0.008000/call
RAG Pipeline
$0.0150/call
Customer Support Bot
$0.009000/call
Data Extraction
$0.0100/call
JSON Extraction
$0.007800/call
Invoice Parsing
$0.005600/call
Resume Parsing
$0.007300/call
Chain of Thought
$0.0330/call
Legal Analysis
$0.0340/call
Math Reasoning
$0.0195/call
Financial Analysis
$0.0320/call
Content Moderation
$0.001100/call
Sentiment Analysis
$0.001100/call
Categorization
$0.001700/call
Intent Detection
$0.000900/call
Copywriting
$0.0125/call
Blog Writing
$0.0490/call
Marketing Copy
$0.0188/call
Product Descriptions
$0.009500/call
$0.006300 per call at 1,500 input / 800 output tokens.
Scores 85/100, rank #4 of 14 models. Top-ranked: GPT 5.6 Terra at 92/100.
Gemini 3 Flash scores 82/100 quality at $0.50/$3.00 per MTok. That is 50% less than GPT 5.6 Luna per call.
Three strategies: prompt caching (90% off input), batch API (50% off all tokens), prompt optimization. Combined: $0.006300 drops to about $0.000315 per call.
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.
1,000K tokens total. Typical faq bot calls use 1,500 plus 800 tokens, well within limits.
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.