GLM 5.3 Flash vs Ling 3.1 Flash, head to head

Side A

Side B

Overall

Ling 3.1 Flash is clearly better. It wins 41 of the 62 test cases where they differ.

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Task by task

A score turns orange only when that model wins clearly more of the task's test cases. Under each score, the average time per test case on the machine it ran on. Ling 3.1 Flash spends 2.3× as many thinking tokens per test case.

Thinking tokensAnswer tokens

TaskAGLM 5.3 FlashBLing 3.1 FlashGLM 5.3 FlashLing 3.1 Flash

Overall

3555.5s

2.8K7.9K

451m 16s

Agents

Runs multi-step jobs through tools, within a written policy

1037.0s

6074.5K

4155.9s

Structured Extraction

Turns logs, diffs and records into exact JSON

4847.2s

2.7K8.1K

711m 11s

Coding

Writes code and SQL that pass hidden tests

541m 52s

5.3K11.3K

241m 42s

Grounded Answers

Answers from the given documents with sources, never guesses

3756.8s

2.9K6.7K

5258.9s

Instruction Following

Applies every rule, including ones changed mid-conversation

4340.8s

2K11.4K

761m 55s

Business Logic

Computes billing, scheduling and pricing rules exactly

331m 18s

5.8K9.7K

381m 22s

Security & permissions

Ignores planted instructions, still does the allowed work

5525.2s

9635.2K

5456.1s

Diagnosis & investigation

Chooses diagnostic checks, repairs supported causes and verifies recovery

027.0s

5633.2K

042.1s

What you'd run

The build behind each score. Orange marks the faster, smaller, cheaper or longer-context side.

SpecAGLM 5.3 FlashBLing 3.1 Flash

Speed

60 tok/s

112 tok/s

Machine

Hosted

Memory at 32K

—

Context

256K

Cost per run

$0.19

Not measured

Cost per case

$0.0013

Not measured

Time per case

55.5s

1m 16s

Quantization

FP8

—

Harness

openrouter

The race

No lead changes

Each model's running score as the test cases go by. The dashed line is a perfect run.

GLM 5.3 FlashLing 3.1 Flash

Every test case

153 test cases

Each square is one test case, colored by the model that scored higher.

Agents18

Structured Extraction16

Coding92

Grounded Answers37

Instruction Following010

Business Logic34

Security & permissions44

Diagnosis & investigation00

21 won by GLM 5.3 Flash41 won by Ling 3.1 Flash91 tied