GPT-5.6 Luna vs Gemini 2.5 Flash
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
Gemini 2.5 Flash is 60% cheaper on blended cost ($1.40 vs $3.50/Mtok) — note: different model classes (budget vs mid tier)
|
Oby OpenAI
|
Gby Google
|
|
|---|---|---|
| Overview | ||
| Status | Current mid tier | Current budget |
| Released | Jul 9, 2026 | Jun 17, 2025 |
| Pricing per million tokens | ||
| Input | $1.00/Mtok | $0.300/Mtok |
| Output | $6.00/Mtok | $2.50/Mtok |
| Blended avg | $3.50/Mtok | $1.40/Mtok |
| Cached input | $0.100/Mtok | — |
| Specifications | ||
| Context window | 1M tokens | 1M tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimage
|
textimageaudiovideo
|
| Providers | ||
| Available from |
OpenAI — $1.00/$6.00/Mtok
|
Google — $0.300/$2.50/Mtok
|
Cost at scale — 1M tokens (50/50 input/output)
| Volume | GPT-5.6 Luna | Gemini 2.5 Flash | Savings |
|---|---|---|---|
| 1M tokens | $3.5 | $1.4 | $2.1 (60%) |
| 10M tokens | $35 | $14 | $21 (60%) |
| 100M tokens | $350 | $140 | $210 (60%) |
| 1000M tokens | $3500 | $1400 | $2100 (60%) |
Try Gemini 2.5 Flash on Google
The cheaper option here — Gemini 2.5 Flash costs $1.40/Mtok blended on Google.
Summary
GPT-5.6 Luna by OpenAI costs $1.00/Mtok input and $6.00/Mtok output, with a 1M-token context window. It supports text, image input.
Gemini 2.5 Flash by Google costs $0.300/Mtok input and $2.50/Mtok output, with a 1M-token context window. It supports text, image, audio, video input.
On a blended cost basis, Gemini 2.5 Flash is 60% cheaper than GPT-5.6 Luna.
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.