Claude Opus 4.8 vs
GLM-5.2

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.

Anthropic

Claude Opus 4.8

Model type: Proprietary
Evidence state: Supported evidence
Published context: 1,000,000

Z.AI

GLM-5.2

Model type: Open Weight
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.

Input API price: GLM-5.2 has the lower verified rate ($1.4 / 1M tokens vs $5 / 1M tokens).
Output API price: GLM-5.2 has the lower verified rate ($4.4 / 1M tokens vs $25 / 1M tokens).

Shared metric view

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

Comparable metric detail

AgenticClaude Opus 4.8: 61.78 · GLM-5.2: 58.15
CodingClaude Opus 4.8: 71.98 · GLM-5.2: 64.95
KnowledgeClaude Opus 4.8: 86.8 · GLM-5.2: 81.2
MathClaude Opus 4.8: 66.8 · GLM-5.2: 80.7
MultimodalGroundedClaude Opus 4.8: 85.4 · GLM-5.2: Unavailable
ReasoningClaude Opus 4.8: 68.3 · GLM-5.2: Unavailable
OverallClaude Opus 4.8: 76.6 · GLM-5.2: 63.4

Source metrics

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

Source metric comparison
Metric	Unit	Claude Opus 4.8	GLM-5.2
Agentic	score	61.78	58.15
Coding	score	71.98	64.95
Knowledge	score	86.8	81.2
Math	score	66.8	80.7
MultimodalGrounded	score	85.4	Unavailable
Reasoning	score	68.3	Unavailable
Overall	score	76.6	63.4

Agentic

Unit: score
Claude Opus 4.8: 61.78
GLM-5.2: 58.15

Coding

Unit: score
Claude Opus 4.8: 71.98
GLM-5.2: 64.95

Knowledge

Unit: score
Claude Opus 4.8: 86.8
GLM-5.2: 81.2

Math

Unit: score
Claude Opus 4.8: 66.8
GLM-5.2: 80.7

MultimodalGrounded

Unit: score
Claude Opus 4.8: 85.4
GLM-5.2: Unavailable

Reasoning

Unit: score
Claude Opus 4.8: 68.3
GLM-5.2: Unavailable

Overall

Unit: score
Claude Opus 4.8: 76.6
GLM-5.2: 63.4

Pricing and context

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

Claude Opus 4.8 pricing routePrimary sourceGLM-5.2 pricing routePrimary source

Route pricing and context comparison
Field	Unit	Claude Opus 4.8	GLM-5.2
Input API price	USD / 1M tokens	$5	$1.4
Output API price	USD / 1M tokens	$25	$4.4
Route context	tokens	1,000,000	1,000,000
Input modalities	published list	Not verified	Not verified
Output modalities	published list	Not verified	Not verified

Input API price

Unit: USD / 1M tokens
Claude Opus 4.8: $5
GLM-5.2: $1.4

Output API price

Unit: USD / 1M tokens
Claude Opus 4.8: $25
GLM-5.2: $4.4

Route context

Unit: tokens
Claude Opus 4.8: 1,000,000
GLM-5.2: 1,000,000

Input modalities

Unit: published list
Claude Opus 4.8: Not verified
GLM-5.2: Not verified

Output modalities

Unit: published list
Claude Opus 4.8: Not verified
GLM-5.2: 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: Claude Opus 4.8 — source benchlm · artifact models · model claude-opus-4-8
GLM-5.2 — source benchlm · artifact models · model glm-5-2
Selected price routes: Claude Opus 4.8 — route benchlm:claude-opus-4-8 · source benchlm · provider anthropic
GLM-5.2 — route benchlm:glm-5-2 · source benchlm · provider z-ai

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