Model decision surface
Compare AI models
Start with GPT-5.1-Codex-Mini and GPT-5.6 Luna, or choose any two current ranked language models. Compare capability evidence, price, context, provider availability, and weight access without pretending one field decides every use case.
Current public data
GPT-5.1-Codex-Mini vs GPT-5.6 Luna
Live dataset updated 8/17/2026, 11:13:20 PM UTC
Open 1200×630 evidence receipt| Field | GPT-5.1-Codex-Mini OpenAI | GPT-5.6 Luna OpenAI |
|---|---|---|
| ModelCap position | #64 | #17 |
| Index score | 41.5 | 68.0 |
| Evidence | Measured1 public benchmark observation across 1 board | Measured6 public benchmark observations across 6 boards |
| Input / 1M | $0.25 | $0.20 |
| Output / 1M | $2.00 | $1.20 |
| Pricing status | fresh | fresh |
| Context | 400K | 1M |
| Providers | 1 | 3 |
| Weight access | API only | API only |
Decision facts
- GPT-5.1-Codex-Mini is #64; GPT-5.6 Luna is #17 on the same current language board.
- Index scores are 41.5 for GPT-5.1-Codex-Mini and 68.0 for GPT-5.6 Luna.
- Both positions use Measured evidence.
- Listed output price per 1M tokens is $2.00 for GPT-5.1-Codex-Mini and $1.20 for GPT-5.6 Luna.
- Published context is 400,000 tokens for GPT-5.1-Codex-Mini and 1,050,000 for GPT-5.6 Luna.
- ModelCap currently lists 1 providers for GPT-5.1-Codex-Mini and 3 for GPT-5.6 Luna.
These are separate published fields, not a synthetic winner. ModelCap does not collapse price, access, context, and capability evidence into a hidden recommendation score.
Popular comparisons
- Claude Fable 5 vs Claude Opus 5#1 vs #2 on the ModelCap Index
- Claude Fable 5 vs Kimi K3#1 vs #3 on the ModelCap Index
- Claude Opus 5 vs Kimi K3#2 vs #3 on the ModelCap Index
- Claude Fable 5 vs Muse Spark 1.2#1 vs #4 on the ModelCap Index
- Claude Opus 5 vs Muse Spark 1.2#2 vs #4 on the ModelCap Index
- Muse Spark 1.2 vs Kimi K3#4 vs #3 on the ModelCap Index
- Claude Fable 5 vs Qwen3.8 Max#1 vs #5 on the ModelCap Index
- Claude Opus 5 vs Qwen3.8 Max#2 vs #5 on the ModelCap Index
- Kimi K3 vs Qwen3.8 Max#3 vs #5 on the ModelCap Index
- Muse Spark 1.2 vs Qwen3.8 Max#4 vs #5 on the ModelCap Index
- Claude Fable 5 vs GPT-5.6 Sol#1 vs #6 on the ModelCap Index
- Claude Opus 5 vs GPT-5.6 Sol#2 vs #6 on the ModelCap Index
- Kimi K3 vs GPT-5.6 Sol#3 vs #6 on the ModelCap Index
- Muse Spark 1.2 vs GPT-5.6 Sol#4 vs #6 on the ModelCap Index
- GPT-5.6 Sol vs Qwen3.8 Max#6 vs #5 on the ModelCap Index
- Claude Fable 5 vs Gemini 3.1 Pro Preview#1 vs #7 on the ModelCap Index
- Claude Opus 5 vs Gemini 3.1 Pro Preview#2 vs #7 on the ModelCap Index
- Gemini 3.1 Pro Preview vs Kimi K3#7 vs #3 on the ModelCap Index
- Gemini 3.1 Pro Preview vs Muse Spark 1.2#7 vs #4 on the ModelCap Index
- Gemini 3.1 Pro Preview vs Qwen3.8 Max#7 vs #5 on the ModelCap Index
- Gemini 3.1 Pro Preview vs GPT-5.6 Sol#7 vs #6 on the ModelCap Index
- Claude Fable 5 vs GPT-5.5#1 vs #8 on the ModelCap Index
- Claude Opus 5 vs GPT-5.5#2 vs #8 on the ModelCap Index
- Kimi K3 vs GPT-5.5#3 vs #8 on the ModelCap Index
Each comparison page is a permanent, shareable URL with the same live figures as this tool: ModelCap Index position, API pricing, context window, provider count, weight access and every shared benchmark board.