Gemini 3.8 Flash vs GPT-5.6 Luna
Rank, tier, score and price side by side, from our weekly rankings. Scores are editorial opinion based on public sources.
A
Gemini 3.8 Flash
B
GPT-5.6 Luna
- ProviderGoogleOpenAI
- Rank#29Higher rank#39
- TierAA
- Score83.2Higher score81.4
- PriceAPI $0.75 input / $3.75 output per 1M tokens through Dec 31, 2026 ($1.50 / $7.50 from Jan 1, 2027)$0.20 per 1M input tokens, $1.20 per 1M output tokens
- TaglineGoogle's fast Flash model tuned for complex agentic tasks at scale.OpenAI's cost-optimized GPT-5.6 tier, repriced 80% lower in July 2026 for high-volume production workloads.
| Attribute | Gemini 3.8 Flash | GPT-5.6 Luna |
|---|---|---|
| Provider | OpenAI | |
| Rank | #29Higher rank | #39 |
| Tier | A | A |
| Score | 83.2Higher score | 81.4 |
| Price | API $0.75 input / $3.75 output per 1M tokens through Dec 31, 2026 ($1.50 / $7.50 from Jan 1, 2027) | $0.20 per 1M input tokens, $1.20 per 1M output tokens |
| Tagline | Google's fast Flash model tuned for complex agentic tasks at scale. | OpenAI's cost-optimized GPT-5.6 tier, repriced 80% lower in July 2026 for high-volume production workloads. |