GPT-6 Luna vs Moondream 3.1

Price, context window & benchmark comparison

OpenAI

GPT-6 Luna

OpenAI
$0.10 / $0.50
Input / Output · per 1M tokens
VS
Moondream

Moondream 3.1

Moondream
$0.30 / $2.50
Input / Output · per 1M tokens
Compare different models
OpenAI
Moondream
Verdict: GPT-6 Luna is 4.3× cheaper than Moondream 3.1 on a typical 3:1 input/output mix. GPT-6 Luna has the larger context window (1.1M vs 32K).
GPT-6 LunaMoondream 3.1
Input price / 1M$0.10$0.30
Output price / 1M$0.50$2.50
Blended price (3:1)$0.20$0.85
Cached input / 1M$0.01—
Context window1.1M32K
Max output128K4K
Intelligence index27.8—
Coding index——
Providers7—
Best provider uptime (30m)100.0%—
Vision inputYesYes
ReasoningYesYes
Tool callingYesNo
Released2026-09-222026-10-15
Retirement——

Cost calculator

FAQ

Which is cheaper, GPT-6 Luna or Moondream 3.1?

GPT-6 Luna is 4.3× cheaper than Moondream 3.1 on a typical 3:1 input/output mix.

GPT-6 Luna vs Moondream 3.1: which has a bigger context window?

GPT-6 Luna: 1,050,000 tokens. Moondream 3.1: 32,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-6 Luna ≈ $450.00, Moondream 3.1 ≈ $1,850.

More comparisons