GLM 5.3 Flash vs LFM2.5 24B A2B, head to head

Side A

Side B

Overall

GLM 5.3 Flash is clearly better. It wins 59 of the 65 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. LFM2.5 24B A2B spends 3.4× as many thinking tokens per test case.

Thinking tokensAnswer tokens

TaskAGLM 5.3 FlashBLFM2.5 24B A2BGLM 5.3 FlashLFM2.5 24B A2B

Overall

3555.5s

2.8K9.2K

71m 53s

Agents

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

1037.0s

60718.5K

123m 49s

Structured Extraction

Turns logs, diffs and records into exact JSON

4847.2s

2.7K4.4K

1054.9s

Coding

Writes code and SQL that pass hidden tests

541m 52s

5.3K6.1K

11m 15s

Grounded Answers

Answers from the given documents with sources, never guesses

3756.8s

2.9K4.7K

557.8s

Instruction Following

Applies every rule, including ones changed mid-conversation

4340.8s

2K13.4K

162m 44s

Business Logic

Computes billing, scheduling and pricing rules exactly

331m 18s

5.8K5K

51m 2s

Security & permissions

Ignores planted instructions, still does the allowed work

5525.2s

9639K

101m 52s

Diagnosis & investigation

Chooses diagnostic checks, repairs supported causes and verifies recovery

027.0s

56319.9K

04m 12s

What you'd run

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

SpecAGLM 5.3 FlashBLFM2.5 24B A2B

Speed

60 tok/s

82 tok/s

Machine

Hosted

Apple M5 Pro, 48 GB

Memory at 32K

—

25.0 GB

Context

128K

Cost per run

$0.19

Not measured

Cost per case

$0.0013

Not measured

Time per case

55.5s

1m 53s

Quantization

FP8

Q8_0

Harness

openrouter

llama.cpp

The race

2 lead changes

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

GLM 5.3 FlashLFM2.5 24B A2B

Every test case

153 test cases

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

Agents22

Structured Extraction102

Coding140

Grounded Answers70

Instruction Following81

Business Logic71

Security & permissions110

Diagnosis & investigation00

59 won by GLM 5.3 Flash6 won by LFM2.5 24B A2B88 tied