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Model A
Gemini 3.5 Flash-Lite

Google

60.5/100

Supported · Public rank #72

90% interval 49.072.0

Gemini 3.5 Flash-Lite vs GLM-5.1

Updated September 4, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.

Z.AI logo
Model B
GLM-5.1

Z.AI

64.41/100

Supported · Public rank #47

90% interval 55.673.3

Decision reading

GLM-5.1 has the higher public score estimate, 64.41 versus 60.5, but the 90% score intervals overlap. Treat that as a lead, not a settled winner.

7 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.

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Which one for your work

Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.

  • Coding work

    Code generation, repair, and software-engineering tasks

    GLM-5.1

    GLM-5.1 leads on the public coding lane, 56.8 to 43.6, with Supported evidence for both models, although the 90% intervals overlap.

    Confidence: limited

  • Long documents

    Prompts that approach the documented context limit

    Gemini 3.5 Flash-Lite

    Gemini 3.5 Flash-Lite has the larger documented context window.

    Confidence: documented

  • Chat turn cost

    1K fresh input + 500 output tokens

    Gemini 3.5 Flash-Lite

    Gemini 3.5 Flash-Lite has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates

Show secondary and unsupported calls
  • Repository review cost

    50K fresh input + 3K output tokens

    Gemini 3.5 Flash-Lite

    Gemini 3.5 Flash-Lite has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates

  • Agentic work

    Tool use, computer use, and multi-step task completion

    Not enough matched evidence

    Gemini 3.5 Flash-Lite and GLM-5.1 are scored on Estimated evidence for agentic, so the reading is directional rather than like-for-like.

    Confidence: limited

  • Cache-heavy agent loop cost

    200K cached + 20K fresh input + 10K output tokens

    Not enough matched evidence

    The page does not recommend a cost winner because at least one model cannot fit the stated workload in one request. GLM-5.1 does not fit this workload in one request. GLM-5.1 has no published cached-input rate, so cached tokens use its listed input rate.

    Confidence: rate-fallback

What is actually comparable

Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.

Shared results
7
Gemini 3.5 Flash-Lite only
3
GLM-5.1 only
19
Like-for-like categories
2 / 8

1 category rests on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.

Category results, on a stated basis

Each row shows the public-lane category score for both models: the BenchAlign lane for agentic, coding, and knowledge, and the weighted public rows elsewhere, with the same rank each model page reports. A row is like-for-like only when both scores rest on Supported evidence or the same weighted set. Directional and not-comparable rows remain visible, but they never receive a winner.

Coding

Like-for-like
Gemini 3.5 Flash-Lite
43.6
Supported · #121/183
GLM-5.1
56.8
Supported · #39/183
Basis
BenchAlign lane · 4 vs 7 public rows
Reading
GLM-5.1 leads · intervals overlap

Knowledge

Like-for-like
Gemini 3.5 Flash-Lite
53.0
Supported · #71/181
GLM-5.1
55.4
Supported · #58/181
Basis
BenchAlign lane · 2 vs 4 public rows
Reading
GLM-5.1 leads · intervals overlap

Agentic

Directional only
Gemini 3.5 Flash-Lite
43.4
Estimated · #104/151
GLM-5.1
50.1
Estimated · #63/151
Basis
BenchAlign lane · 3 vs 9 public rows
Reading
Directional only

Reasoning

Not comparable
Gemini 3.5 Flash-Lite
60.8
Unranked · 3 rankable rows
GLM-5.1
69.9
Unranked · 2 rankable rows
Basis
Provisional lane · 1 vs 0 weighted rows
Reading
Not comparable

Math

Not comparable
Gemini 3.5 Flash-Lite
Not ranked
GLM-5.1
64.1
#3/7
Basis
Provisional lane · 0 vs 4 weighted rows
Reading
Not comparable

Multilingual

Not comparable
Gemini 3.5 Flash-Lite
Not ranked
GLM-5.1
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Multimodal

Not comparable
Gemini 3.5 Flash-Lite
76.1
#16/48
GLM-5.1
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Instruction following

Not comparable
Gemini 3.5 Flash-Lite
Not ranked
GLM-5.1
93.5
#5/120
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Ranks count the models scored in each category’s lane, so the agentic, coding, and knowledge denominators (BenchAlign) differ from the provisional-lane categories. Unranked scores sit on the lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.

Shape of the matched evidence

Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.

Too few matched category axes support a radar. The ruled list below shows only shared benchmark results; positions use each benchmark’s normalized display scale when available.

What each workload costs

Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.

Chat turn

1K fresh input + 500 output tokens

Gemini 3.5 Flash-Lite
$0.00155
Fits in one request
GLM-5.1
$0.0036
Fits in one request

Gemini 3.5 Flash-Lite has the lower modeled cost

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

Gemini 3.5 Flash-Lite
$0.0225
Fits in one request
GLM-5.1
$0.0832
Fits in one request

Gemini 3.5 Flash-Lite has the lower modeled cost

Costs use the listed standard API rates.

Cache-heavy agent loop

200K cached + 20K fresh input + 10K output tokens

Gemini 3.5 Flash-Lite
$0.037
Fits in one request
GLM-5.1
$0.352
Does not fit in one request
Cached input priced at the published list-input rate

GLM-5.1 does not fit this workload in one request. GLM-5.1 has no published cached-input rate, so cached tokens use its listed input rate.

Specification differences

Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.

Cached-input rate

A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.

Gemini 3.5 Flash-Lite

$0.03 per 1M cached input tokens

Google Gemini API pricing

GLM-5.1

Not published

Reasoning profile

Gemini 3.5 Flash-Lite

Reasoning

GLM-5.1

Reasoning

Weight access

Gemini 3.5 Flash-Lite

Proprietary

GLM-5.1

Open Weight

License

Gemini 3.5 Flash-Lite

Proprietary

GLM-5.1

Open Weight

Release date

Gemini 3.5 Flash-Lite

2026-07-21

GLM-5.1

2026-04-07

If you already use one of these models
Deployment change
The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
Quality signal
GLM-5.1 has the higher public score estimate, 64.41 versus 60.5, but the 90% score intervals overlap.
Workload cost
Repository review: $0.0225 vs $0.0832. Cache-heavy agent loop: $0.037 vs $0.352.
Context tradeoff
Gemini 3.5 Flash-Lite has the larger documented window (1M).

Run the same representative tasks against both endpoints before changing production traffic.

Self-host vs API cost

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

Gemini 3.5 Flash-Lite
API / mo$2,100
Self-host / moNot listed
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

Benchmark evidence

The full public result ledger is available for audit without forcing a wide desktop table onto a phone.

Browse raw public benchmark evidence29 rows

Agentic

  • Terminal-Bench 2.0

    Gemini 3.5 Flash-Lite54%
    Source
    GLM-5.163.5%
    Source

    GLM-5.1 leads this result

  • OSWorld-Verified

    Gemini 3.5 Flash-Lite74%
    Source
    GLM-5.1

    Not directly comparable

  • Terminal-Bench 2.1 (Vals)

    Gemini 3.5 Flash-Lite50.2%
    Source
    GLM-5.156.9%
    Source

    GLM-5.1 leads this result

  • BrowseComp

    Gemini 3.5 Flash-Lite
    GLM-5.168%
    Source

    Not directly comparable

  • τ³-bench results

    Gemini 3.5 Flash-Lite
    GLM-5.170.6%
    Source

    Not directly comparable

  • MCP Atlas

    Gemini 3.5 Flash-Lite
    GLM-5.171.8%
    Source

    Not directly comparable

  • CyberGym

    Gemini 3.5 Flash-Lite
    GLM-5.168.7%
    Source

    Not directly comparable

  • Claw-Eval

    Gemini 3.5 Flash-Lite
    GLM-5.162.3%
    Source

    Not directly comparable

  • Gert Labs

    Gemini 3.5 Flash-Lite
    GLM-5.160.11%
    Source

    Not directly comparable

  • ResearchClawBench

    Gemini 3.5 Flash-Lite
    GLM-5.118.2%
    Source

    Not directly comparable

Coding

  • Terminal-Bench 2.0

    Gemini 3.5 Flash-Lite54.0%
    Source
    GLM-5.1

    Not directly comparable

  • SWE-bench Pro

    Gemini 3.5 Flash-Lite54.2%
    Source
    GLM-5.158.4%
    Source

    GLM-5.1 leads this result

  • LiveCodeBench (Vals)

    Gemini 3.5 Flash-Lite79.0%
    Source
    GLM-5.181.4%
    Source

    GLM-5.1 leads this result

  • SWE-bench (Vals)

    Gemini 3.5 Flash-Lite75.0%
    Source
    GLM-5.176.4%
    Source

    GLM-5.1 leads this result

  • NL2Repo

    Gemini 3.5 Flash-Lite
    GLM-5.142.7%
    Source

    Not directly comparable

  • SWE-Rebench

    Gemini 3.5 Flash-Lite
    GLM-5.162.7%
    Source

    Not directly comparable

  • Vibe Code Bench

    Gemini 3.5 Flash-Lite
    GLM-5.131.46%
    Source

    Not directly comparable

  • OpenHarmony Bench

    Gemini 3.5 Flash-Lite
    GLM-5.152.3%
    Source

    Not directly comparable

Reasoning

  • MRCRv2

    Gemini 3.5 Flash-Lite72.2%
    Source
    GLM-5.1

    Not directly comparable

Knowledge

  • GPQA Diamond (Vals)

    Gemini 3.5 Flash-Lite83.8%
    Source
    GLM-5.184.5%
    Source

    GLM-5.1 leads this result

  • MMLU-Pro (Vals)

    Gemini 3.5 Flash-Lite85.8%
    Source
    GLM-5.186.9%
    Source

    GLM-5.1 leads this result

  • GPQA-D

    Gemini 3.5 Flash-Lite
    GLM-5.186.2%
    Source

    Not directly comparable

  • HLE

    Gemini 3.5 Flash-Lite
    GLM-5.152.3%
    Source

    Not directly comparable

Math

  • AIME26

    Gemini 3.5 Flash-Lite
    GLM-5.195.3%
    Source

    Not directly comparable

  • HMMT Nov 2025

    Gemini 3.5 Flash-Lite
    GLM-5.194.0%
    Source

    Not directly comparable

  • HMMT Feb 2026

    Gemini 3.5 Flash-Lite
    GLM-5.182.6%
    Source

    Not directly comparable

  • MMAnswerBench

    Gemini 3.5 Flash-Lite
    GLM-5.183.8%
    Source

    Not directly comparable

  • FrontierMath v2 (Tiers 1-3)

    Gemini 3.5 Flash-Lite
    GLM-5.133.448%
    Source

    Not directly comparable

  • FrontierMath v2 (Tier 4)

    Gemini 3.5 Flash-Lite
    GLM-5.112.500%
    Source

    Not directly comparable

Frequently asked questions

Which is better, Gemini 3.5 Flash-Lite or GLM-5.1?

GLM-5.1 has the higher public score estimate, 64.41 versus 60.5, but the 90% score intervals overlap. The higher estimate is not a decisive winner because the uncertainty ranges overlap.

Which is better for coding, Gemini 3.5 Flash-Lite or GLM-5.1?

GLM-5.1 leads the public coding lane, 56.8 to 43.6, with Supported evidence for both models, although the 90% intervals overlap.

Which is better for agentic tasks, Gemini 3.5 Flash-Lite or GLM-5.1?

GLM-5.1 scores higher for agentic tasks on the public lane, 50.1 to 43.4. Gemini 3.5 Flash-Lite and GLM-5.1 are scored on Estimated evidence for agentic tasks, so the reading is directional rather than like-for-like. BenchLM does not name a winner for agentic tasks from a directional reading; read the shared benchmark rows directly and test the models on the same task set.

Which costs less, Gemini 3.5 Flash-Lite or GLM-5.1?

For the stated presets, chat costs $0.00155 on Gemini 3.5 Flash-Lite and $0.0036 on GLM-5.1; repository review costs $0.0225 and $0.0832; the cache-heavy agent loop costs $0.037 and $0.352. GLM-5.1 does not fit this workload in one request. GLM-5.1 has no published cached-input rate, so cached tokens use its listed input rate.

Which has the larger context window, Gemini 3.5 Flash-Lite or GLM-5.1?

Gemini 3.5 Flash-Lite has the larger documented context window: 1M, compared with 203K.

Related comparisons

Last updated September 4, 2026

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