AI model comparison
Inkling Small vs GPT-5.6 Luna
Side by side comparison of Inkling Small and GPT-5.6 Luna on pricing, benchmark scores, context window, and more.
Inkling Small is an open-weight multimodal mixture-of-experts model from Thinking Machines Lab, with 12B active parameters out of 276B total.
- Input / 1M
- $0.45
- Output / 1M
- $1.20
- Context
- 524K
GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series.
- Input / 1M
- $0.20
- Output / 1M
- $1.20
- Context
- 1.05M
Comparing image generators? Compare image models
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
GPT-5.6 Luna
1.5x cheaper for a typical chat
Higher intelligence score
Not available
Not enough benchmark data
Larger context window
GPT-5.6 Luna
1.05M vs 524K tokens
Newer release
Inkling Small
Released July 30, 2026
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
GPT-5.6 LunaNot availableCoding index
GPT-5.6 Luna71.4Agentic index
GPT-5.6 Luna42.1Pricing
Inkling Small vs GPT-5.6 Luna API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | GPT-5.6 Luna | |
|---|---|---|
| Input tokensPer 1M tokens | $0.45 | $0.20 |
| Output tokensPer 1M tokens | $1.20 | $1.20 |
| Cached input (read)Per 1M tokens | $0.10 | $0.02 |
| Cache writePer 1M tokens | Not available | $0.25 |
| Long-context pricingPer 1M tokens, for very long prompts | Same rate at any length | $0.40 in / $1.80 out above 272K |
| Web searchPer request | Not available | $0.01 |
What it costs in practice
Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.
Chat message
2K in, 500 out
GPT-5.6 Luna$1Coding task
30K in, 4K out
GPT-5.6 Luna$10.80$5.40 cachedLong document summary
150K in, 2K out
GPT-5.6 Luna$32.40$5.40 cachedSpecs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | GPT-5.6 Luna | |
|---|---|---|
| Context window | 524K tokens | 1.05M tokens |
| Max output | 262K tokens | 128K tokens |
| Input types | Audio, Image, Text | File, Image, Text |
| Output types | Text | Text |
| Reasoning effort levels | Max, High, Medium, Low, Minimal, None | Max, Extra high, High, Medium, Low, None |
| Default reasoning effort | High | Medium |
| Release date | July 30, 2026 | July 9, 2026 |
Features
Supported features
API features available for each model.
| Metric | GPT-5.6 Luna | |
|---|---|---|
| Tool calling | Supported | Supported |
| Structured outputs | Not supported | Supported |
| JSON mode | Not supported | Supported |
| Reasoning | Supported | Supported |
| Temperature | Supported | Not supported |
| Stop sequences | Supported | Not supported |
| Deterministic seed | Supported | Supported |
| Verbosity control | Not supported | Supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
- Inkling Small vs Qwen3.8 27B
- Inkling Small vs MiniMax M3
- Inkling Small vs Nemotron 3.5 Super VL
- Inkling Small vs Inkling
- Inkling Small vs Nemotron 3 Ultra
- Inkling Small vs Gemini 3.5 Flash Lite
- Inkling Small vs Muse Glimmer 30B
- Inkling Small vs Command A+
- Inkling Small vs DeepSeek V4.1 Flash 1017
- Inkling Small vs DeepSeek V4.1 Flash
GPT-5.6 LunaView full model details- GPT-5.6 Luna vs DeepSeek V4.1 Flash 1017
- GPT-5.6 Luna vs DeepSeek V4.1 Flash
- GPT-5.6 Luna vs GPT-6 Luna
- GPT-5.6 Luna vs Hy4 preview
- GPT-5.6 Luna vs Step 5 Preview
- GPT-5.6 Luna vs GLM 5.3
- GPT-5.6 Luna vs MiniMax M3
- GPT-5.6 Luna vs Gemini 3.1 Flash Lite
- GPT-5.6 Luna vs DeepSeek V4 Pro 0423
- GPT-5.6 Luna vs GPT-6 Luna Pro
- GPT-5.6 Luna vs gpt-oss-120b
- GPT-5.6 Luna vs Step 3.7 Flash
- GPT-5.6 Luna vs GPT-6.1 Terra
- GPT-5.6 Luna vs GPT-4o-mini
- GPT-5.6 Luna vs GLM 5.3 FlashX
- GPT-5.6 Luna vs Qwen3.6 35B A3B
- GPT-5.6 Luna vs GPT-5.6 Luna Pro
- GPT-5.6 Luna vs MiMo-V2.5
- GPT-5.6 Luna vs MiMo-V2.5-Pro
- GPT-5.6 Luna vs Muse Glimmer 30B
- GPT-5.6 Luna vs Command A+
Our take
GPT-5.6 Luna is 1.5x cheaper for a typical chat. GPT-5.6 Luna has the larger context window (1.05M vs 524K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is Inkling Small or GPT-5.6 Luna cheaper?
GPT-5.6 Luna is cheaper for a typical chat (2K input tokens and 500 output tokens). GPT-5.6 Luna costs $0.20 per 1M input tokens and $1.20 per 1M output tokens, while Inkling Small costs $0.45 per 1M input tokens and $1.20 per 1M output tokens.
Which has a bigger context window, Inkling Small or GPT-5.6 Luna?
GPT-5.6 Luna supports up to 1.05M tokens of context, compared with 524K for Inkling Small.
Can I use Inkling Small and GPT-5.6 Luna at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Inkling Small and GPT-5.6 Luna answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to Inkling Small and GPT-5.6 Luna at the same time. Compare the answers side by side and keep the best one.