GPT-5.6 Luna vs Seed-2.0-Code
Price, context window & benchmark comparison
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Compare different models
Verdict: GPT-5.6 Luna is 2.5× cheaper than Seed-2.0-Code on a typical 3:1 input/output mix. GPT-5.6 Luna has the larger context window (1.1M vs 262K).
| GPT-5.6 Luna | Seed-2.0-Code | |
|---|---|---|
| Input price / 1M | $0.20 | $0.50 |
| Output price / 1M | $1.20 | $3.00 |
| Blended price (3:1) | $0.45 | $1.13 |
| Cached input / 1M | $0.02 | — |
| Context window | 1.1M | 262K |
| Max output | 128K | 131K |
| Intelligence index | 37.3 | — |
| Coding index | 71.4 | — |
| Providers | 7 | 1 |
| Best provider uptime (30m) | 100.0% | — |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-07-09 | 2026-08-12 |
| Retirement | — | 2026-11-11 |
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FAQ
Which is cheaper, GPT-5.6 Luna or Seed-2.0-Code?
GPT-5.6 Luna is 2.5× cheaper than Seed-2.0-Code on a typical 3:1 input/output mix.
GPT-5.6 Luna vs Seed-2.0-Code: which has a bigger context window?
GPT-5.6 Luna: 1,050,000 tokens. Seed-2.0-Code: 262,144 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GPT-5.6 Luna ≈ $1,000, Seed-2.0-Code ≈ $2,500.
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