LLM Comparison
Gemini 3.5 Flash-Lite vs GPT-5.6 Luna
Side-by-side specs, pricing & capabilities · Updated September 2026
Price vs Intelligence
Add to comparison
2/6 models| Organization | ||
| OpenTools Score | 24 17.3 | 52 74.7 |
| Family | Gemini | GPT-5.6 |
| Status | Current | Current |
| Release Date | Jul 2026 | Jul 2026 |
| Context Window | 1.0M tokens | 1.1M tokens |
| Input Price | $0.30/M tokens | $0.20/M tokens |
| Output Price | $2.50/M tokens | $1.20/M tokens |
| Pricing Notes | DeepMind model page lists $0.30 input and $2.50 output per 1M tokens with no caching in the performance table. The ai.google.dev API docs were attempted through ScrapingBee and returned HTTP 400, so exact billing details beyond the official DeepMind price table were not used. | OpenAI pricing page lists $1 input and $6 output per 1M tokens, plus GPT-5.6 cache-write and cache-read pricing. |
| Capabilities | textvisionaudio-inputvideo-inputpdf-inputreasoningcodingtool-usesearch-groundingcomputer-usestructured-output | textvisionreasoningcodingtool-useweb-searchfile-searchcomputer-useagents |
| Training Cutoff | — | Feb 16, 2026 |
| Max Output | 64K tokens | 128K tokens |
| API Identifier | gemini-3.5-flash-lite | gpt-5.6-luna |
| Benchmarks | ||
| Artificial Analysis Intelligence Index | 36artificial-analysis | 51artificial-analysis |
| SWE-Bench Pro | 54.2google-deepmind | — |
| Terminal-Bench 2.1 | 54google-deepmind | 80.8989artificial-analysis |
| GDPVal-AA v2 | 1140google-deepmind | — |
| Artificial Analysis Intelligence Index v4.3 | 22.6607artificial-analysis | 37.5048artificial-analysis |
| GPQA Diamond | 83.8384artificial-analysis | 91.1111artificial-analysis |
| SciCode | 41.3194artificial-analysis | 53.588artificial-analysis |
| Artificial Analysis Coding Agent Index | — | 74.6artificial-analysis |
| View Gemini 3.5 Flash-Lite | View GPT-5.6 Luna | |
Cost Calculator
Enter your expected monthly token usage to compare costs.
| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| GPT-5.6 LunaCheapest | $0.20 | $0.60 | $0.80 | — |
| Gemini 3.5 Flash-Lite | $0.30 | $1.25 | $1.55 | +94% |
Gemini 3.5 Flash-Lite
Gemini 3.5 Flash-Lite is Google DeepMind general availability low-latency model for high-volume agentic systems, coding, document parsing, translation, and structured automation. Official DeepMind evidence lists 1M input tokens, 64k output tokens, text, image, video, audio, and PDF inputs, text output, tool use, Gemini API availability, and $0.30 input / $2.50 output pricing per million tokens.
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.
More Comparisons
Looking for more AI models?
Browse All LLMs