Model decision surface
Compare AI models
Start with GPT-5.3-Codex and Ornith 1.5 397B, 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-5.3-Codex vs Ornith 1.5 397B
Live dataset updated 8/20/2026, 5:39:50 AM UTC
Open 1200×630 evidence receipt| Field | GPT-5.3-Codex OpenAI | Ornith 1.5 397B Ornith Ai |
|---|---|---|
| ModelCap position | #21 | #12 |
| Index score | 66.4 | 74.2 |
| Evidence | Measured1 public benchmark observation across 1 board | Estimatedstart rank interpolated from the launch card's own comparison table against resolved catalogue peers, discounted for measured cross-lab optimism |
| Input / 1M | $1.75 | Unavailable |
| Output / 1M | $14.00 | Unavailable |
| Pricing status | fresh | unavailable |
| Context | 400K | — |
| Providers | 2 | 0 |
| Weight access | API only | Open weights |
Decision facts
- GPT-5.3-Codex is #21; Ornith 1.5 397B is #12 on the same current language board.
- Index scores are 66.4 for GPT-5.3-Codex and 74.2 for Ornith 1.5 397B.
- Evidence differs: GPT-5.3-Codex is Measured; Ornith 1.5 397B is Estimated.
- Weight access differs: GPT-5.3-Codex is none; Ornith 1.5 397B is open.
- ModelCap currently lists 2 providers for GPT-5.3-Codex and 0 for Ornith 1.5 397B.
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 GPT-5.6 Sol#1 vs #5 on the ModelCap Index
- Claude Opus 5 vs GPT-5.6 Sol#2 vs #5 on the ModelCap Index
- Kimi K3 vs GPT-5.6 Sol#3 vs #5 on the ModelCap Index
- Muse Spark 1.2 vs GPT-5.6 Sol#4 vs #5 on the ModelCap Index
- Claude Fable 5 vs Qwen3.8 Max#1 vs #6 on the ModelCap Index
- Claude Opus 5 vs Qwen3.8 Max#2 vs #6 on the ModelCap Index
- Kimi K3 vs Qwen3.8 Max#3 vs #6 on the ModelCap Index
- Muse Spark 1.2 vs Qwen3.8 Max#4 vs #6 on the ModelCap Index
- GPT-5.6 Sol vs Qwen3.8 Max#5 vs #6 on the ModelCap Index
- Claude Fable 5 vs GLM 5.3#1 vs #7 on the ModelCap Index
- Claude Opus 5 vs GLM 5.3#2 vs #7 on the ModelCap Index
- Kimi K3 vs GLM 5.3#3 vs #7 on the ModelCap Index
- Muse Spark 1.2 vs GLM 5.3#4 vs #7 on the ModelCap Index
- GPT-5.6 Sol vs GLM 5.3#5 vs #7 on the ModelCap Index
- Qwen3.8 Max vs GLM 5.3#6 vs #7 on the ModelCap Index
- Claude Fable 5 vs Gemini 3.1 Pro Preview#1 vs #8 on the ModelCap Index
- Claude Opus 5 vs Gemini 3.1 Pro Preview#2 vs #8 on the ModelCap Index
- Gemini 3.1 Pro Preview vs Kimi K3#8 vs #3 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.