Gemini 4 Carbon vs GLM 5.3 FlashX
Price, context window & benchmark comparison
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Verdict: GLM 5.3 FlashX is 6.8× cheaper than Gemini 4 Carbon on a typical 3:1 input/output mix.
| Gemini 4 Carbon | GLM 5.3 FlashX | |
|---|---|---|
| Input price / 1M | $2.00 | $0.37 |
| Output price / 1M | $10.00 | $1.25 |
| Blended price (3:1) | $4.00 | $0.59 |
| Cached input / 1M | $0.10 | $0.075 |
| Context window | 1M | 1M |
| Max output | 944K | 131K |
| Intelligence index | 60 | — |
| Coding index | — | — |
| Providers | 7 | 1 |
| Best provider uptime (30m) | 100.0% | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-11-10 | 2026-09-18 |
| Retirement | — | — |
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FAQ
Which is cheaper, Gemini 4 Carbon or GLM 5.3 FlashX?
GLM 5.3 FlashX is 6.8× cheaper than Gemini 4 Carbon on a typical 3:1 input/output mix.
Gemini 4 Carbon vs GLM 5.3 FlashX: which has a bigger context window?
Gemini 4 Carbon: 1,048,576 tokens. GLM 5.3 FlashX: 1,048,576 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Gemini 4 Carbon ≈ $9,000, GLM 5.3 FlashX ≈ $1,365.
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