LLM Comparison
GPT-5.6 Luna vs Inflection 3 Pi
Side-by-side specs, pricing & capabilities · Updated August 2026
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 36 10.3 | |
| Family | GPT-5.6 | Inflection |
| Status | Current | Current |
| Release Date | Jul 2026 | Oct 2024 |
| Context Window | 1.1M tokens | 8K tokens |
| Input Price | $1.00/M tokens | $2.50/M tokens |
| Output Price | $6.00/M tokens | $10.00/M tokens |
| Pricing Notes | OpenAI pricing page lists $1 input and $6 output per 1M tokens, plus GPT-5.6 cache-write and cache-read pricing. | — |
| Capabilities | textvisionreasoningcodingtool-useweb-searchfile-searchcomputer-useagents | textcode |
| Max Output | 128K tokens | 1K tokens |
| API Identifier | gpt-5.6-luna | inflection/inflection-3-pi |
| Benchmarks | ||
| Artificial Analysis Intelligence Index | 51artificial-analysis | — |
| Artificial Analysis Coding Agent Index | 74.6artificial-analysis | — |
| View GPT-5.6 Luna | View Inflection 3 Pi | |
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| GPT-5.6 LunaCheapest | $1.00 | $3.00 | $4.00 | — |
| Inflection 3 Pi | $2.50 | $5.00 | $7.50 | +88% |
OpenAI
GPT-5.6 Luna
GPT-5.6 Luna is OpenAI lower-cost GPT-5.6 model for high-volume reasoning, coding, and agentic workloads. OpenAI model docs list the same 1.05M token context window, 128K max output, and major tool support as the larger GPT-5.6 variants.
Inflection AI
Inflection 3 Pi
Inflection 3 Pi is a large language model from Inflection AI. Supports up to 8,000 token context window. Available from $2.50/M input tokens.
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