GLM-5.3 vs Seed 2.0 Pro: Specs & Benchmark Comparison

CharacteristicGLM-5.3Seed 2.0 Pro
CompanyZhipu AIByteDance
Release DateAugust 14, 2026February 14, 2026
Parameters753B
MultimodalNoYes
Context (input)1.0M256K
Context (output)131K66K
Input Price / 1M$1.40$0.50
Output Price / 1M$4.40$3.00
Average Score0.80.9

Verdict

GLM-5.3 leads in 2 out of 4 comparison categories.

Overall Performance

Both models show comparable average scores: GLM-5.3 — 0.8, Seed 2.0 Pro — 0.9.

API Cost

Seed 2.0 Pro is 1.7x cheaper: input $0.50/1M vs $1.40/1M tokens.

Context Window

GLM-5.3 supports a larger context: 1M vs 256K tokens.

Recency

GLM-5.3 is newer: released 8/14/2026 vs 2/14/2026.

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Frequently Asked Questions

Which is better for coding — GLM-5.3 or Seed 2.0 Pro?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — GLM-5.3 or Seed 2.0 Pro?
Seed 2.0 Pro is cheaper for input: $0.50 per 1M tokens vs $1.40.
Which has a larger context window — GLM-5.3 or Seed 2.0 Pro?
GLM-5.3 supports a larger context: 1,000,000 tokens vs 256,000.

The GLM-5.3 and Seed 2.0 Pro comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GLM-5.3 or Seed 2.0 Pro page. See also the complete list of AI model comparisons.