OpenAI: GPT Luna Latest vs Google: Gemini 3.5 Flash Lite (batch)
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| OpenAI: GPT Luna Latest | Google: Gemini 3.5 Flash Lite (batch) | |
|---|---|---|
| Vendor | ~openai | |
| Quality Score | 100 | 100 |
| Input Price | $0.10/M | $0.15/M |
| Output Price | $0.50/M | $1.25/M |
| Context Window | 1,050,000 | 1,048,576 |
| Max Output | 128,000 | 65,536 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | ✓ |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, GPT Luna Latest costs $0.23 and Gemini 3.5 Flash Lite (batch) costs $0.46, so GPT Luna Latest is about 2.1 times cheaper for the same work.
Both take in a similar amount of text: 1,050,000 and 1,048,576 tokens, about 1,575 and 1,573 pages.
Only Gemini 3.5 Flash Lite (batch) offers audio input and video input.
Across the 6 tasks where they differ, GPT Luna Latest scores higher on 6 (Code Completion, Code Documentation, Regex Writing and others).
GPT Luna Latest was released in September 2026 and Gemini 3.5 Flash Lite (batch) in July 2026.
Pick GPT Luna Latest if you need lower cost or the stronger all-round task scores; pick Gemini 3.5 Flash Lite (batch) if you need audio input or video input.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | OpenAI: GPT Luna Latest | Google: Gemini 3.5 Flash Lite (batch) |
|---|---|---|
| Code Completion | 131 | 131 |
| Code Documentation | 131 | 131 |
| Regex Writing | 119 | 119 |
| JSON Extraction | 131 | 131 |
| Bulk Data Labeling | 129 | 129 |
| Short-Form Summarization | 123 | 123 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →