Standard Compute
Model comparison 2026

GLM 5.3 vs GPT-5.6 Sol

GLM 5.3
Z.AI · Frontier · Open weights
$1.50/1M · 1.0M ctx
GPT-5.6 Sol
OpenAI · Frontier · Proprietary
$4.40/1M · 1.1M ctx

Community vote

Pick a winner in each dimension. You can change your vote any time.

Output Quality
Correctness and depth of what it produces
Agentic Ability
Tool calls, instruction-following, and multi-step tasks
Speed
Tokens per second and time-to-first-token
Value for money
How much capability you get per dollar
Reliability
Consistent results: fewer refusals, loops and format breaks

Specs and pricing side by side

Spec
GLM 5.3
GPT-5.6 Sol
Maker
Z.AI
OpenAI
Blended price / 1M
$1.50
$4.40
Input / output
$0.08 in · $4.80 out / 1M tokens
$2.00 in · $10 out / 1M tokens
Context window
1.0M
1.1M
Open weights
Yes
No
Tool use
Yes
Yes
Reasoning
Yes
Yes
Output Quality
9.3
9.5
Agentic Ability
9.4
9.4
Speed
7.8
7.4
Value for money
9.0
7.8
Reliability
8.8
9.3

Pricing and capabilities synced from the OpenRouter catalogue. Scores are editorial (0–10).

Verdict: GLM 5.3 or GPT-5.6 Sol?

Updated 2026-10-13

Choose GLM 5.3 if you want open-weight coding agents that need near-frontier agentic ability. Choose GPT-5.6 Sol if you want hard coding and research tasks for teams in the OpenAI ecosystem.

Editorially it's close: each model leads in 2 of our five dimensions. On price, GLM 5.3 runs about $1.50 per 1M tokens (blended) and is open-weight; GPT-5.6 Sol is about $4.40 and proprietary.

Where GLM 5.3 falls short
  • Custom license with conditions for very large hosting providers
  • Reasoning cannot be turned off
Full GLM 5.3 breakdown →
Where GPT-5.6 Sol falls short
  • Superseded by GPT-6.1 Sol, which scores well above it on agent benchmarks
  • Slower and pricier than Terra for routine work
Full GPT-5.6 Sol breakdown →

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