GLM 5.3 Prime vs GPT-6.1 Sol
Price, context window & benchmark comparison
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Verdict: GPT-6.1 Sol is 7% cheaper than GLM 5.3 Prime on a typical 3:1 input/output mix. GPT-6.1 Sol has the larger context window (1.1M vs 1M).
| GLM 5.3 Prime | GPT-6.1 Sol | |
|---|---|---|
| Input price / 1M | $2.80 | $2.00 |
| Output price / 1M | $8.80 | $10.00 |
| Blended price (3:1) | $4.30 | $4.00 |
| Cached input / 1M | $0.56 | $0.10 |
| Context window | 1M | 1.1M |
| Max output | 131K | 128K |
| Intelligence index | — | 54.5 |
| Coding index | — | — |
| Providers | 1 | 9 |
| Best provider uptime (30m) | 100.0% | 100.0% |
| Vision input | No | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-09-23 | 2026-09-29 |
| Retirement | — | — |
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FAQ
Which is cheaper, GLM 5.3 Prime or GPT-6.1 Sol?
GPT-6.1 Sol is 7% cheaper than GLM 5.3 Prime on a typical 3:1 input/output mix.
GLM 5.3 Prime vs GPT-6.1 Sol: which has a bigger context window?
GLM 5.3 Prime: 1,000,000 tokens. GPT-6.1 Sol: 1,050,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GLM 5.3 Prime ≈ $10,000, GPT-6.1 Sol ≈ $9,000.
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