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AnthropicZ.aiLLM matchup

Claude Haiku 5.5vs.GLM-5.1

Which one is better?

Claude Haiku 5.5 performs better than GLM-5.1 and is cheaper: GLM-5.1 costs 14 times (input) and 8.8 times (output) as much.

Haiku 5.5 ahead
IntelligenceOverall index, 100 points = average
103.4

Claude Haiku 5.5

Rank 20

82.3

GLM-5.1

Rank 51

Haiku 5.5 faster
SpeedTokens per second
236

Claude Haiku 5.5

80

GLM-5.1

Haiku 5.5 cheaper
Price$ per 1M tokens
$0.20

Claude Haiku 5.5

$2.15

GLM-5.1

Haiku 5.5 more popular
Popularity0 to 100
77

Claude Haiku 5.5

Rank 3 of 875

47

GLM-5.1

Rank 146 of 875

Above 100,000 tokens of context, Claude Haiku 5.5 costs more: $0.50 input and $2.50 output per 1M tokens.

Choose Claude Haiku 5.5 for

HealthReasoningCodingFinanceAgentsGeneralProductivityLegal

Choose GLM-5.1 for

No clear advantage

Where is the difference?

Strengths at a glance

Haiku 5.5GLM-5.1

The median of all ranked models is below 100 in every area, so it sits in the centre of the net.

105110100CodingHaiku 5.5ReasoningHaiku 5.5AgentsHaiku 5.5GeneralHaiku 5.5FinanceHaiku 5.5LegalHaiku 5.5HealthHaiku 5.5
CodingHaiku 5.5 ahead
Haiku 5.5106.2Rank 18
GLM-5.181.5Rank 58
Median of ranked models83.7

95 % range: Haiku 5.5 102.5 to 109.9, GLM-5.1 76.8 to 86.2.

AreaHaiku 5.5GLM-5.1

The same values and verdicts as the bars below. In the top field the net starts at 100 points, the reference group average; values below sit as a hollow point in the centre. Not in the net because a model has no own value there or the data are too thin: Mathematics, Knowledge, Multimodal.

Haiku 5.5 is ahead in 7 of 9 areas, GLM-5.1 in none.

Haiku 5.5 ahead: 7too little data: 2

Areas in the overall index
ReasoningHaiku 5.5 +25105.2 to 80.1
CodingHaiku 5.5 +25106.2 to 81.5
AgentsHaiku 5.5 +21106.1 to 84.9
GeneralHaiku 5.5 +21106.4 to 85.4
Knowledgetoo little data85.5 to 82.9
Mathematicsonly Haiku 5.5 has a score
Specialist fields
HealthHaiku 5.5 +30108.9 to 78.6
FinanceHaiku 5.5 +22104.7 to 83.1
LegalHaiku 5.5 +894.4 to 86.1

Bar length shows the gap in index points (full width 15 points, one standard deviation of the reference group). Solid means clearly ahead, hatched not certain yet, a thin grey bar level.

Show 3 more areas that do not count toward the overall index
ProductivityHaiku 5.5 +17101.8 to 85.1
Cybersecurityonly Haiku 5.5 has a score
Educationonly Haiku 5.5 has a score

Bar length shows the gap in index points (full width 15 points, one standard deviation of the reference group). Solid means clearly ahead, hatched not certain yet, a thin grey bar level.

Which model for which task?

Everyday tasks, translated from the area values above. Each row names the values it rests on.

Writing and debugging codeHaiku 5.5Coding 106.2 to 81.5
Maths and data analysisHaiku 5.5Mathematics without a score for GLM-5.1, Reasoning 105.2 to 80.1
Facts and researchopenKnowledge 85.5 to 82.9 (too little data)
Agents and workflowsHaiku 5.5Agents 106.1 to 84.9
Fast chat repliesHaiku 5.5236 to 80 tokens per second
Security analysisopenCybersecurity without a score for GLM-5.1
Many requests on a small budgetHaiku 5.5$0.20 to $2.15 per 1M tokens
Finance, legal and medical textsHaiku 5.5Finance 104.7 to 83.1, Legal 94.4 to 86.1, Health 108.9 to 78.6

See for yourself: same task, one attempt

SVG short test

One SVG task with the same fixed settings for every model, without hidden thinking.

Prompt

Return only one standalone SVG of a pelican riding a bicycle. Use viewBox="0 0 800 600", simple shapes, two clearly visible wheels and a recognizable pelican with a long beak. At most 30 SVG elements and 1800 characters. No Markdown, explanations, comments, scripts, animation, CSS or external resources.

Claude Haiku 5.5

Unavailable in this round

GLM-5.1

GLM-5.1: SVG short test

Oct 14, 2026 · $0.0027

Test details
Test run
Oct 14, 2026
Provider
z-ai/fp8
API model
z-ai/glm-5.1
Output
580 tokens
Reasoning
API reports 0 reasoning tokens
Cost of the attempt
$0.0027
Test round
43b8c5c46830
Earlier tests

Pelican on a bicycle

Prompt

Generate an SVG of a pelican riding a bicycle

Task origin: Simon Willison

Claude Haiku 5.5

Not tested yet

GLM-5.1

Output withheld for safety

Oct 5, 2026 · 142 s · $0.03

Not yet visually reviewed. A successful recording does not confirm correct physics or full compliance with the prompt.

Test details
Run date
Oct 5, 2026
API provider
openrouter
Requested API model
z-ai/glm-5.1
Reasoning setting
high
Token limit including reasoning
8,192 tokens
Output tokens
6,031 tokens
Cost of the attempt
$0.0266
Response time
141.6 s
API model reported in response
z-ai/glm-5.1
Pinned endpoint
Z.AI | z-ai/glm-5.1-20260406
Temperature
Provider default
Test protocol
community-visual-tests-v1
Technical checks
Failed

Earlier attempts (3)

  • Oct 2, 2026Output withheld for safetyReasoning setting: high
  • Oct 1, 2026API request failedReasoning setting: high
  • Sep 7, 2026API request failedReasoning setting: high

Claude Haiku 5.5 and GLM-5.1 in the overall index

Every model with a place in the overall index, both models of this matchup highlighted. You can add or hide other models.

Overall index (Gradually Meta-Score v4)

20 of 91 models

4 models in this view are measured at a lower reasoning effort than max in the overall index. Dashed column: lower reasoning effort than the top.

Claude Opus 5.5max126.1
Gemini 4 Carbonhigh125.7
Claude Fable 5.1max123.8
Claude Sonnet 5.5max122.8
Gemini 4 Argonhigh122.3
GPT-6 Astramax121.3
GPT-6.1 Solmax119.2
Muse Wonder Fullmax118.3
Claude Opus 5max117.2
Muse Wondermax113.4
Kimi K3.1 Promax112.9
Claude Fable 5max112.5
GPT-6 Solmax110.6
GPT-5.6 Solmax108.7
Muse Spark 1.3max107.4
Gemini 3.7 Flashhigh107.1
DeepSeek V4.1 Flash 1017max106.6
Gemini 3.8 Flashhigh106.5
Claude Haiku 5.5max103.4
GLM-5.182.3

Popularity compared

How often the models are searched for, used and mentioned, on a scale from 0 to 100.

Claude Haiku 5.5 is more popular than GLM-5.1: 77 to 47 out of 100.

Over time

Weekly values from October 18, 2026 to November 5, 2026

Claude Haiku 5.5GLM-5.1

All data side by side

The better value is bold. For the overall index only when the gap is clear.

MetricClaude Haiku 5.5GLM-5.1
Intelligence
Overall indexpoints, 100 = reference group average, higher is better103.482.3
RankRank 20 of 91Rank 51 of 91
Price per 1M tokens
Inputwhat you send$0.10above 100,000 tokens: $0.50$1.40
Outputwhat the model writes$0.50above 100,000 tokens: $2.50$4.40
Speed
Tokens per second23680
Popularity
Popularitysearch, usage and mentions, 0 to 10077Rank 3 of 87547Rank 146 of 875
Technical
Context windowhow much text the model reads at once1 M tokens≈ 1,500 A4 pages200,000 tokens≈ 300 A4 pages
Knowledge cutoffJune 2026n/a
ReleasedOct 7, 2026Apr 7, 2026
AvailabilityActiveOpen Source
Open weightsnoyes

Prices without caching or batch discounts · Page count as a rule of thumb from Artificial Analysis

Is there a better choice?

Cheaper than Haiku 5.5MiMo V2.6 Flash

Overall index 98.3, rank 31. $0.14 input and $0.28 output per 1M tokens.

View profile
Best model in the overall indexClaude Opus 5.5

Overall index 126.1, rank 1. $4 input and $20 output per 1M tokens.

Haiku 5.5 vs. Claude Opus 5.5

Shared benchmarks

Single results from the same benchmark version, task and metric. A value is bold only with the same test setup and a clear gap.

A: Claude Haiku 5.5B: GLM-5.1

Code MigrationOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 44.6%GLM-5.1: 25.8%Vals AIAs of 10/29/2026
Finance Agent (v2)Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 54.1%GLM-5.1: 44.8%Vals AIAs of 10/29/2026
Legal Research BenchOverall · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 43.8%GLM-5.1: 27.9%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,589GLM-5.1: 1,508LMArenaAs of 10/28/2026
LMArena Text, Style ControlOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,425GLM-5.1: 1,465LMArenaAs of 10/28/2026
MedCodeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 51.5%GLM-5.1: 41.6%Vals AIAs of 10/29/2026
MedScribeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 89.5%GLM-5.1: 72.3%Vals AIAs of 10/29/2026
ProgramBenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 2.5%GLM-5.1: 0%Vals AIAs of 11/05/2026
Public Benefits Bench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 63.2%GLM-5.1: 61.8%Vals AIAs of 10/12/2026
Vibe Code Bench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 90.4%GLM-5.1: 31.5%Vals AIAs of 11/05/2026
Show 54 more benchmarks
Code MigrationCLI · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.1%GLM-5.1: 18.8%Vals AIAs of 10/29/2026
Finance Agent (v2)Adjustments · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 49.6%GLM-5.1: 43.3%Vals AIAs of 10/29/2026
Legal Research BenchAdministrative / Regulatory · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 50%GLM-5.1: 31.8%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevHTML development · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,568GLM-5.1: 1,508LMArenaAs of 10/28/2026
LMArena Text, Style ControlBusiness, management and finance · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,435GLM-5.1: 1,467LMArenaAs of 10/28/2026
ProgramBenchAlmost Resolved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 29.5%GLM-5.1: 1%Vals AIAs of 11/05/2026
Code MigrationCOBOL · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 70%GLM-5.1: 46.6%Vals AIAs of 10/29/2026
Finance Agent (v2)All-Pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 42.9%GLM-5.1: 32.7%Vals AIAs of 10/29/2026
Legal Research BenchAdministrative / Regulatory · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 88.7%GLM-5.1: 80%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevReact development · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,608GLM-5.1: 1,504LMArenaAs of 10/28/2026
LMArena Text, Style ControlChinese · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,468GLM-5.1: 1,513LMArenaAs of 10/28/2026
ProgramBenchFully Resolved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 2.5%GLM-5.1: 0%Vals AIAs of 11/05/2026
Code MigrationCode Quality · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 4.825 / 5GLM-5.1: 3.544 / 5Vals AIAs of 10/29/2026
Finance Agent (v2)Comparables · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 45.3%GLM-5.1: 41.6%Vals AIAs of 10/29/2026
Legal Research BenchBusiness & Commercial · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 44.2%GLM-5.1: 23.3%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevWeb development · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,589GLM-5.1: 1,508LMArenaAs of 10/28/2026
LMArena Text, Style ControlCoding · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,489GLM-5.1: 1,513LMArenaAs of 10/28/2026
ProgramBenchRaw Pass Rate · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 78.7%GLM-5.1: 50.9%Vals AIAs of 11/05/2026
Finance Agent (v2)Disclosure Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 64.3%GLM-5.1: 52.7%Vals AIAs of 10/29/2026
Legal Research BenchBusiness & Commercial · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 87%GLM-5.1: 81.7%Vals AIAs of 11/05/2026
LMArena Text, Style ControlCreative writing · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,361GLM-5.1: 1,446LMArenaAs of 10/28/2026
Finance Agent (v2)Earnings Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 73.5%GLM-5.1: 57%Vals AIAs of 10/29/2026
Legal Research BenchCivil Litigation · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 40.7%GLM-5.1: 22.2%Vals AIAs of 11/05/2026
LMArena Text, Style ControlEnglish · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,438GLM-5.1: 1,481LMArenaAs of 10/28/2026
Finance Agent (v2)Financial Modeling · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 28.3%GLM-5.1: 13.5%Vals AIAs of 10/29/2026
Legal Research BenchCivil Litigation · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 83%GLM-5.1: 83.5%Vals AIAs of 11/05/2026
LMArena Text, Style ControlEntertainment, sports and media · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,378GLM-5.1: 1,441LMArenaAs of 10/28/2026
Finance Agent (v2)General Qualitative Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 61.9%GLM-5.1: 63.7%Vals AIAs of 10/29/2026
Legal Research BenchConstitutional / Civil Rights · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 44.7%GLM-5.1: 34.2%Vals AIAs of 11/05/2026
LMArena Text, Style ControlExcluding ties · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,417GLM-5.1: 1,471LMArenaAs of 10/28/2026
Finance Agent (v2)General Quantitative Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 74.4%GLM-5.1: 61.9%Vals AIAs of 10/29/2026
Legal Research BenchConstitutional / Civil Rights · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 82.3%GLM-5.1: 84.9%Vals AIAs of 11/05/2026
LMArena Text, Style ControlExpert prompts · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,479GLM-5.1: 1,497LMArenaAs of 10/28/2026
Finance Agent (v2)Market Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 63.1%GLM-5.1: 51.9%Vals AIAs of 10/29/2026
Legal Research BenchCriminal · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 42.1%GLM-5.1: 29.8%Vals AIAs of 11/05/2026
LMArena Text, Style ControlFrench prompts · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,457GLM-5.1: 1,481LMArenaAs of 10/28/2026
Finance Agent (v2)Precedents · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 27%GLM-5.1: 17.8%Vals AIAs of 10/29/2026
Legal Research BenchCriminal · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 83.8%GLM-5.1: 78.1%Vals AIAs of 11/05/2026
LMArena Text, Style ControlHard prompts · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,452GLM-5.1: 1,489LMArenaAs of 10/28/2026
Legal Research BenchFamily · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 22.7%GLM-5.1: 9.1%Vals AIAs of 11/05/2026
LMArena Text, Style ControlHard prompts, English · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,460GLM-5.1: 1,499LMArenaAs of 10/28/2026
Legal Research BenchFamily · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 74.1%GLM-5.1: 58.2%Vals AIAs of 11/05/2026
LMArena Text, Style ControlInstruction following · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,429GLM-5.1: 1,462LMArenaAs of 10/28/2026
Legal Research BenchHealth · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 66.7%GLM-5.1: 36.7%Vals AIAs of 11/05/2026
LMArena Text, Style ControlLegal and government · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,413GLM-5.1: 1,471LMArenaAs of 10/28/2026
Legal Research BenchHealth · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 94.5%GLM-5.1: 82.8%Vals AIAs of 11/05/2026
LMArena Text, Style ControlLife, physical and social science · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,444GLM-5.1: 1,488LMArenaAs of 10/28/2026
Legal Research BenchImmigration · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.4%GLM-5.1: 18.2%Vals AIAs of 11/05/2026
LMArena Text, Style ControlLonger queries · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,424GLM-5.1: 1,480LMArenaAs of 10/28/2026
Legal Research BenchImmigration · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 83.1%GLM-5.1: 80.7%Vals AIAs of 11/05/2026
LMArena Text, Style ControlMath · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,449GLM-5.1: 1,475LMArenaAs of 10/28/2026
Legal Research BenchOverall · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 84.8%GLM-5.1: 77.8%Vals AIAs of 11/05/2026
LMArena Text, Style ControlMathematical professions · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,452GLM-5.1: 1,476LMArenaAs of 10/28/2026
LMArena Text, Style ControlMedicine and healthcare · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,412GLM-5.1: 1,485LMArenaAs of 10/28/2026

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  15. 24Claude Haiku 5.5 vs. GPT-6.1 Sol
  16. 25Claude Haiku 5.5 vs. Gemini 3.1 Pro Preview
  17. 26Claude Haiku 5.5 vs. GLM-5.3-Flash
  18. 27Claude Haiku 5.5 vs. DeepSeek-V4-Pro
  19. 28Claude Haiku 5.5 vs. GPT-5.6 Sol
  20. 29Claude Haiku 5.5 vs. Gemini 3.6 Flash
  21. 30Claude Haiku 5.5 vs. Claude Opus 4.6
  22. 31Claude Haiku 5.5 vs. Kimi K2.6
  23. 32Claude Haiku 5.5 vs. Claude Opus 4.7
  24. 33Claude Haiku 5.5 vs. Mistral Large 3
  25. 34Claude Haiku 5.5 vs. GPT-5.5
  26. 35DeepSeek-V4.1-Flash vs. GLM-5.1
  27. 36Claude Haiku 5.5 vs. GPT-6.1 Terra