GPT-6 Luna (Max) vs Step 5 Preview
Step 5 Preview scores 28.5 on the Artificial Analysis Intelligence Index, against 27.9 for GPT-6 Luna (Max). GPT-6 Luna (Max) costs $0.20 per million tokens (3:1 blend), against $1.43 for Step 5 Preview. Step 5 Preview generates 140 t/s, against 113 t/s for GPT-6 Luna (Max). Both accept a context of 1M tokens.
Comparison generated from the catalogue data. Add or remove models below to refine it.
2 models compared
- GPT-6 Luna (Max)
OpenAI
- Step 5 Preview
StepFun
✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.
| Metrics | GPT-6 Luna (Max) OpenAI | Step 5 Preview StepFun | Add a model · 2/4 |
|---|---|---|---|
| Intelligence | 27.9 | Best: 28.5 | |
| Cyber Index | Best: 52.7% | 47.7% | |
| Speed | 113 t/s | Best: 140 t/s | |
| TTFT | 140 s | Best: 0.91 s | |
| Input · $ / 1M tokens | Best: $0.10 | $1×10 relative to the lowest price among the compared models | |
| Output · $ / 1M tokens | Best: $0.50 | $2.70×5.4 relative to the lowest price among the compared models | |
| Context window | 1M | 1M | |
| Reasoning | Yes | Yes | |
| Open weights | Yes | Yes | |
| Cost / task | Best: $0.152 | $2.35×15.4 relative to the lowest price among the compared models |
Intelligence
- GPT-6 Luna (Max)
- 27.9
- Step 5 Preview
- Best: 28.5
Cyber Index
- GPT-6 Luna (Max)
- Best: 52.7%
- Step 5 Preview
- 47.7%
Speed
- GPT-6 Luna (Max)
- 113 t/s
- Step 5 Preview
- Best: 140 t/s
TTFT
- GPT-6 Luna (Max)
- 140 s
- Step 5 Preview
- Best: 0.91 s
Input · $ / 1M tokens
- GPT-6 Luna (Max)
- Best: $0.10
- Step 5 Preview
- $1×10 relative to the lowest price among the compared models
Output · $ / 1M tokens
- GPT-6 Luna (Max)
- Best: $0.50
- Step 5 Preview
- $2.70×5.4 relative to the lowest price among the compared models
Context window
- GPT-6 Luna (Max)
- 1M
- Step 5 Preview
- 1M
Reasoning
- GPT-6 Luna (Max)
- Yes
- Step 5 Preview
- Yes
Open weights
- GPT-6 Luna (Max)
- Yes
- Step 5 Preview
- Yes
Cost / task
- GPT-6 Luna (Max)
- Best: $0.152
- Step 5 Preview
- $2.35×15.4 relative to the lowest price among the compared models
Each reasoning level remains a separate configuration.
Score and cost
Each line joins the reasoning levels of a compared model; the large point marks the configuration in the table. The top-right corner holds the best score for the lowest cost. Select another point to compare that level.
- GPT-6 Luna (Max)27.9 · $0.152
- Step 5 Preview28.5 · $2.35