GLM 5.3 Flash vs GPT Image 2.6 Sunburst
Price, context window & benchmark comparison
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Verdict: GLM 5.3 Flash has the larger context window (1M vs —).
| GLM 5.3 Flash | GPT Image 2.6 Sunburst | |
|---|---|---|
| Input price / 1M | $0.0399 | $5.00 |
| Output price / 1M | $0.0784 | — |
| Blended price (3:1) | $0.0495 | — |
| Cached input / 1M | $0.03 | $1.25 |
| Context window | 1M | — |
| Max output | 131K | — |
| Intelligence index | 27.8 | — |
| Coding index | 71.5 | — |
| Providers | 42 | — |
| Best provider uptime (30m) | 100.0% | — |
| Vision input | Yes | Yes |
| Reasoning | Yes | No |
| Tool calling | Yes | No |
| Released | 2026-08-26 | 2026-11-04 |
| Retirement | — | — |
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FAQ
Which is cheaper, GLM 5.3 Flash or GPT Image 2.6 Sunburst?
GLM 5.3 Flash and GPT Image 2.6 Sunburst are priced identically.
GLM 5.3 Flash vs GPT Image 2.6 Sunburst: which has a bigger context window?
GLM 5.3 Flash: 1,048,576 tokens. GPT Image 2.6 Sunburst: — tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GLM 5.3 Flash ≈ $119.00, GPT Image 2.6 Sunburst ≈ $10,000.
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