GLM-5 (Reasoning) vs
GPT-5.5

Read the published evidence, route context, and missing facts before making a local decision. This page does not name a universal winner.

Models in this comparison

Provider identity and evidence state stay balanced across the pair.

Model type
Open Weight
Evidence state
Estimated evidence
Published context
200,000
VS
O

OpenAI

GPT-5.5

Model type
Proprietary
Evidence state
Estimated evidence
Published context
1,000,000

Key implications

Insufficient shared-metric coverage. Each finding is tied to a published metric, price, context, or modality fact.

  1. Input API price: GLM-5 (Reasoning) has the lower verified rate ($1 / 1M tokens vs $5 / 1M tokens).
  2. Output API price: GLM-5 (Reasoning) has the lower verified rate ($3.2 / 1M tokens vs $30 / 1M tokens).
  3. Context window: GPT-5.5 has the larger published context window (1,000,000 tokens vs 200,000 tokens).

Shared metric view

A radar is shown only when at least four compatible supported score metrics are published.

Comparable metric detail

  • AgenticGLM-5 (Reasoning): Unavailable · GPT-5.5: 64.71
  • CodingGLM-5 (Reasoning): Unavailable · GPT-5.5: 72.5
  • KnowledgeGLM-5 (Reasoning): Unavailable · GPT-5.5: 77.7
  • MathGLM-5 (Reasoning): Unavailable · GPT-5.5: 71.1
  • MultimodalGroundedGLM-5 (Reasoning): Unavailable · GPT-5.5: 65.3
  • ReasoningGLM-5 (Reasoning): Unavailable · GPT-5.5: 79
  • OverallGLM-5 (Reasoning): 60.58 · GPT-5.5: 72.92

Source metrics

Friendly metric names and published units stay visible. Missing measurements remain unavailable rather than becoming a score.

Source metric comparison
MetricUnitGLM-5 (Reasoning)GPT-5.5
AgenticscoreUnavailable64.71
CodingscoreUnavailable72.5
KnowledgescoreUnavailable77.7
MathscoreUnavailable71.1
MultimodalGroundedscoreUnavailable65.3
ReasoningscoreUnavailable79
Overallscore60.5872.92

Agentic

Unit
score
GLM-5 (Reasoning)
Unavailable
GPT-5.5
64.71

Coding

Unit
score
GLM-5 (Reasoning)
Unavailable
GPT-5.5
72.5

Knowledge

Unit
score
GLM-5 (Reasoning)
Unavailable
GPT-5.5
77.7

Math

Unit
score
GLM-5 (Reasoning)
Unavailable
GPT-5.5
71.1

MultimodalGrounded

Unit
score
GLM-5 (Reasoning)
Unavailable
GPT-5.5
65.3

Reasoning

Unit
score
GLM-5 (Reasoning)
Unavailable
GPT-5.5
79

Overall

Unit
score
GLM-5 (Reasoning)
60.58
GPT-5.5
72.92

Pricing and context

Verification is shown beside each selected route. Missing facts remain Not verified.

Route pricing and context comparison
FieldUnitGLM-5 (Reasoning)GPT-5.5
Input API priceUSD / 1M tokens$1$5
Cached input API priceUSD / 1M tokensNot verified$0.5
Output API priceUSD / 1M tokens$3.2$30
Route contexttokens200,0001,000,000
Input modalitiespublished listNot verifiedNot verified
Output modalitiespublished listNot verifiedNot verified

Input API price

Unit
USD / 1M tokens
GLM-5 (Reasoning)
$1
GPT-5.5
$5

Cached input API price

Unit
USD / 1M tokens
GLM-5 (Reasoning)
Not verified
GPT-5.5
$0.5

Output API price

Unit
USD / 1M tokens
GLM-5 (Reasoning)
$3.2
GPT-5.5
$30

Route context

Unit
tokens
GLM-5 (Reasoning)
200,000
GPT-5.5
1,000,000

Input modalities

Unit
published list
GLM-5 (Reasoning)
Not verified
GPT-5.5
Not verified

Output modalities

Unit
published list
GLM-5 (Reasoning)
Not verified
GPT-5.5
Not verified

Evidence provenance

Source records, route identity, timestamps, and methodology are consolidated here without declaring either model a winner.

Publication time
Aug 30, 2026, 2:15 AM UTC
Freshness
Stale — Published weekly benchmark evidence has not refreshed within 8 days.
Methodology
benchlm: benchlm_raw_composite
Model records
  • GLM-5 (Reasoning) — source benchlm · artifact models · model glm-5-reasoning
  • GPT-5.5 — source benchlm · artifact models · model gpt-5-5
Selected price routes
  • GLM-5 (Reasoning) — route benchlm:glm-5-reasoning · source benchlm · provider z-ai
  • GPT-5.5 — route benchlm:gpt-5-5 · source benchlm · provider openai

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