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Claude Sonnet 4.5 Thinking vs GLM-5.1

Head-to-head comparison across 0benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.

Benchmark data for one or both models is coming soon. This page currently shows metadata and pricing where BenchLM has it, and score-level comparisons will populate as public benchmark results land.

Claude Sonnet 4.5 Thinking

0

VS

GLM-5.1

83

0 categoriesvs0 categories

Verified leaderboard positions: Claude Sonnet 4.5 Thinking unranked · GLM-5.1 #21

Benchmark data for Claude Sonnet 4.5 Thinking and GLM-5.1 is coming soon on BenchLM.

Category Radar

Head-to-Head by Category

Operational Comparison

Claude Sonnet 4.5 Thinking

GLM-5.1

Price (per 1M tokens)

N/A

$1.4 / $4.4

Speed

N/A

N/A

Latency (TTFT)

N/A

N/A

Context Window

200K

203K

Quick Verdict

Benchmark data for Claude Sonnet 4.5 Thinking and GLM-5.1 is coming soon on BenchLM.

BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.

GLM-5.1 has the larger context window at 203K, compared with 200K for Claude Sonnet 4.5 Thinking.

Benchmark Deep Dive

Frequently Asked Questions (3)

Can I compare Claude Sonnet 4.5 Thinking and GLM-5.1 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.

Why does this comparison show “coming soon”?

BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.

What data is available for Claude Sonnet 4.5 Thinking and GLM-5.1 today?

GLM-5.1: $1.40 input / $4.40 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.

Self-host vs API cost

Estimates at 50,000 req/day · 1000 tokens/req average.

Claude Sonnet 4.5 Thinking
API / mo$0
Self-host / moN/A
Break-even
Proprietary model — self-hosting not applicable.
GLM-5.1
API / mo$4,350
Self-host / mo$18,221
Break-even264M/day
Model the full break-even

Related Comparisons

Last updated: April 24, 2026

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