OpenAI
GPT 5.6 Luna
gpt-5.6-luna is a creative-first multimodal model from OpenAI. Optimized for high emotional intelligence and complex narrative consistency, gpt-5.6-luna excels at UI reasoning and stylistic tone control for human-centric applications.

Modalities

Input: TextInput: ImageInput: Document
Output: Text

Context

API Usage Examples
curl --request POST "https://gptproto.com/v1/chat/completions" \
  --header "Authorization: Bearer $GPTPROTO_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
    "model": "gpt-5.6-luna",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'
GPT 5.6 Luna pricing

Estimate a request with real work scenarios. GPTProto token pricing is 20% below official rates.

Cost calculator

Multi-turn agent with cached context.
$0.16 / 1M$0.00024
$0.96 / 1M$0.000768
$0.2 / 1M$0.0006
$0.016 / 1M$0.0004
Cost per request$0.002008

Top up

GPTProto vs official pricing.
Requests
You pay
20% off
$100
You receive$100.00

Save$25.00 (20%)vs OpenAI official

Related Models
All Models
ModelInput → Output
GPT 5.6 LunaCurrent
1.05M$0.16 / $0.96 per 1M$0.20 / $0.02 per 1M
Input: TextInput: ImageInput: Document
Output: Text
GLM 5.3
1.05M$1.26 / $3.96 per 1M— / $0.23 per 1M
Input: TextInput: ImageInput: Document
Output: Text
Gemini 3.7 Flash
1.05M$0.45 / $2.25 per 1M— / $0.04 per 1M
Input: TextInput: ImageInput: Document
Output: Text
Grok 4.6
500K$1.20 / $3.60 per 1M— / $0.30 per 1M
Input: TextInput: Image
Output: Text
Qwen3.8 Max
1M$1.80 / $5.40 per 1M$2.25 / $0.23 per 1M
Input: TextInput: ImageInput: VideoInput: Document
Output: Text
Claude Opus 5
1M$4.00 / $20.00 per 1M$5.00 / $0.40 per 1M
Input: TextInput: ImageInput: Document
Output: Text
Gemini 3.6 Flash
1.05M$0.45 / $2.25 per 1M— / $0.04 per 1M
Input: TextInput: ImageInput: Document
Output: Text
Gemini 3.5 Flash Lite
1.05M$0.18 / $1.50 per 1M$0.02 / $0.02 per 1M
Input: TextInput: ImageInput: Document
Output: Text
Kimi K3
1.05M$2.70 / $13.50 per 1M$0.27 / $0.27 per 1M
Input: TextInput: ImageInput: Document
Output: Text
GPT 5.6 Terra
1.05M$1.60 / $9.60 per 1M$2.00 / $0.16 per 1M
Input: TextInput: ImageInput: Document
Output: Text
GPT 5.6 Sol
1.05M$4.00 / $24.00 per 1M$5.00 / $0.40 per 1M
Input: TextInput: ImageInput: Document
Output: Text
Grok 4.5
500K$1.20 / $3.60 per 1M$0.30 / $0.30 per 1M
Input: TextInput: Image
Output: Text
Claude Sonnet 5
1M$1.60 / $8.00 per 1M$2.00 / $0.16 per 1M
Input: TextInput: Document
Output: Text
MiniMax M3
1.05M$0.48 / $0.96 per 1M$0.10 / $0.10 per 1M
Input: TextInput: ImageInput: Document
Output: Text
GLM 5.2
1.05M$1.26 / $3.96 per 1M$0.23 / $0.23 per 1M
Input: TextInput: ImageInput: Document
Output: Text
GPT 5.1 Chat Latest
—$1.00 / $8.00 per 1M$0.10 / $0.10 per 1M
Input: TextInput: ImageInput: Document
Output: Text
Claude Fable 5
1M$8.00 / $40.00 per 1M$10.00 / $0.80 per 1M
Input: TextInput: Document
Output: Text
Qwen3.7 Max
1M$0.36 / $1.44 per 1M$0.07 / $0.07 per 1M
Input: TextInput: Document
Output: Text
DeepSeek v4 Flash
—1.05M$0.44 / $1.32 per 1M— / $0.01 per 1M
Input: Text
Output: Text
DeepSeek v4 Pro
—1.05M$1.32 / $3.96 per 1M— / $0.04 per 1M
Input: Text
Output: Text
Grok 4.3
1M$0.75 / $1.50 per 1M$0.12 / $0.12 per 1M
Input: TextInput: Image
Output: Text
GPT 5.4 Pro
1.05M$24.00 / $144.00 per 1M—
Input: TextInput: ImageInput: Document
Output: Text
GPT 5.5 Pro
1.05M$24.00 / $144.00 per 1M—
Input: TextInput: ImageInput: Document
Output: Text
GPT 5.5
1.05M$4.00 / $24.00 per 1M$0.40 / $0.40 per 1M
Input: TextInput: ImageInput: Document
Output: Text
Kimi K2.6
262K$0.85 / $3.60 per 1M$0.14 / $0.14 per 1M
Input: TextInput: Document
Output: Text
GLM 5.1
205K$1.26 / $3.96 per 1M$0.23 / $0.23 per 1M
Input: TextInput: Document
Output: Text
DeepSeek v3.2
164K$0.17 / $0.25 per 1M$0.02 / $0.02 per 1M
Input: Text
Output: Text
MiniMax M2.5
205K$0.24 / $0.96 per 1M$0.30 / $0.02 per 1M
Input: TextInput: Document
Output: Text
Kimi K2.5
262K$0.54 / $2.70 per 1M$0.09 / $0.09 per 1M
Input: TextInput: Document
Output: Text
Qwen Turbo
—$0.04 / $0.18 per 1M$0.009 / $0.009 per 1M
Input: Text
Output: Text
Doubao Seed 1.6 Thinking (Build 250715)
262K$0.10 / $0.97 per 1M—
Input: TextInput: Image
Output: Text
Doubao Seed 1.6 Thinking (Build 250615)
262K$0.10 / $0.97 per 1M—
Input: TextInput: Image
Output: Text
Doubao Seed 1.6 Flash (Build 250615)
262K$0.02 / $0.18 per 1M—
Input: TextInput: Image
Output: Text

Core Capabilities of gpt-5.6-luna

Discover the features that make gpt-5.6-luna a leader in emotional intelligence and visual reasoning. From UI-to-code to narrative arcs, see what it can do.

Advanced Visual UI Reasoning

Convert hand-drawn wireframes or screenshots into functional Tailwind and React code with gpt-5.6-luna’s high-precision vision capabilities.

Nuanced Style and Tone Control

Maintain a specific brand voice or persona over long conversations. gpt-5.6-luna follows complex stylistic guidelines without drifting into robotic patterns.

Zero-Shot Style Transfer

Rewrite technical docs into layman's terms or noir scripts while preserving 99% factual density. gpt-5.6-luna adapts linguistic style instantly.

Emotional Intelligence (EQ)

Optimized for empathy and conflict resolution, gpt-5.6-luna outperforms previous models in soft-skill qualitative testing and human evaluations.

gpt-5.6-luna Frequently Asked Questions

Find answers about gpt-5.6-luna pricing, capabilities, and how it compares to other models. Learn how to leverage this high-EQ creative AI for your next project on GPTProto.com.

What makes gpt-5.6-luna different from the Sol variant?

While gpt-5.6-sol is built for heavy mathematical logic and symbolic reasoning, gpt-5.6-luna focuses on emotional intelligence and creative expression. Luna is better at following brand voices and handling soft-skill interactions, making it the preferred choice for marketing, roleplay, and customer experience. It avoids the robotic patterns common in logic-heavy models to provide a more natural, human-like conversational experience.

Can gpt-5.6-luna handle image and video inputs?

Yes, gpt-5.6-luna is natively multimodal. It can analyze images for mood and composition, translate UI screenshots into functional React code, and interpret video data. This makes it ideal for creative asset management and accessibility audits where visual context is just as important as the text. Unlike older models, it can describe the 'feel' of a visual piece rather than just identifying the objects present within the frame.

How does gpt-5.6-luna pricing work on GPTProto.com?

It is a mid-tier model priced at $4.00 per 1M input tokens and $12.00 per 1M output tokens. On GPTProto.com, you can also access a 50% discount via the Batch API for non-urgent tasks with a 24-hour turnaround. Context caching is automatically enabled for prompts exceeding 1,000 tokens, helping you reduce costs on long-running creative projects and repetitive prompts without sacrificing the high quality of the output.

Is gpt-5.6-luna better than Claude 3.5 Opus for writing?

gpt-5.6-luna offers similar stylistic adherence and nuance to Claude 3.5 Opus but at a significantly lower price point. It maintains narrative consistency for creative projects over 10,000 words, making it a powerful alternative for authors and scriptwriters. While Opus is known for its coding and nuance, Luna provides a competitive creative edge with its specialized tuning for emotional intelligence and complex persona maintenance.

Does gpt-5.6-luna support structured JSON outputs?

Absolutely. gpt-5.6-luna fully supports JSON mode and tool calling. It is particularly effective at conversational tool use, meaning it will often ask for clarification before executing a function, ensuring higher accuracy in complex agentic workflows. This makes it reliable for developers who need structured data for front-end applications while still requiring the model to maintain a helpful and empathetic conversational tone.

Is data sent to gpt-5.6-luna used for training?

No. When accessing gpt-5.6-luna through our platform, your data is protected by enterprise-grade privacy agreements. OpenAI does not use requests sent via the API to train their models, ensuring your intellectual property and creative drafts remain secure. We prioritize your privacy so you can build sensitive customer support tools or proprietary creative assets with the peace of mind that your data remains strictly yours.