ZMIME
Comparison · 2 models · Updated Oct 4, 2026

GLM-5.3-Flash vs Inkling Small

GLM-5.3-Flash comes out ahead, 80 to 70 on our weighted score, and it is the cheaper option too.

  1. Our pick

    Z.ai (Zhipu)

    GLM-5.3-Flash

    Released Aug 26, 2026

    80/100
    • ECI151.9
    • Price$0.15 / $0.50
    • Context1M
    Full specs Remove GLM-5.3-Flash

  2. Thinking Machines

    Inkling Small

    Released Jul 30, 2026

    70/100
    • ECI150.2
    • Price$0.50 / $1.20
    • Context1.05M
    Full specs Remove Inkling Small

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

GLM-5.3-Flash is our pick

GLM-5.3-Flash is the better all-round choice, scoring 80/100 against Inkling Small (70). It leads on capability, price and inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityGLM-5.3-FlashCapabilities Index (ECI): GLM-5.3-Flash 151.9 · Inkling Small 150.2
  • Lowest priceGLM-5.3-FlashGLM-5.3-Flash $0.237 · Inkling Small $0.675 per 1M tokens (3:1 blend)
  • Longest contextInkling SmallInkling Small 1,048,576 · GLM-5.3-Flash 1,000,000 tokens
  • Widest inputsGLM-5.3-FlashGLM-5.3-Flash: Text, Images, PDFs, Video · Inkling Small: Text, Images, Audio
  • Self-hostingAll open weightsEvery model here can be downloaded and run on your own hardware
How the score is built
MeasureWeightGLM-5.3-FlashInkling Small
CapabilityCapabilities Index (ECI)50%8178
Price25%7958
Inputs & features15%9070
Context window10%6061
Overall100%80/10070/100
02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

GLM-5.3-Flash vs Inkling Small specifications side by side
SpecificationGLM-5.3-FlashZ.ai (Zhipu)Inkling SmallThinking Machines
Capability
Capabilities Index (ECI)151.9 (best)150.2
ECI rank#42 of 148 (best)#47 of 148
GPQA DiamondGraduate-level science questions90.2% (best)88.5%
FrontierMath Tiers 1–3Research-level mathematics55.8% (best)46.3%
OTIS Mock AIME 2024–2025Competition mathematics93.9% (best)90.0%
SimpleQA VerifiedShort factual questions—19.1%
Price per million tokens
Input$0.15 (best)$0.50
Output$0.50 (best)$1.20
Cached input$0.03—
Blended (3:1)$0.237 (best)$0.675
Long-context rateSame rateSame rate
Price sourceOfficial Z.AI APIMedian of 11 providers
Limits
Context window1,000,000 tokens1,048,576 tokens (best)
Max output131,072 tokens1,048,576 tokens (best)
Inputs and features
TextYesYes
ImagesYesYes
PDFsYesNo
AudioNoYes
VideoYesNo
ReasoningYeslow · high · maxYes
Tool callingYesYes
Structured outputYesNo
Availability
WeightsOpenOpenApache-2.0
API model IDglm-5.3-flash—
API providers65 (best)11
ReleasedAug 26, 2026Jul 30, 2026
Knowledge cutoff——
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • GLM-5.3-Flash$2.50
  • Inkling Small$7.40
04 — Questions

Which should you choose?

Which is better: GLM-5.3-Flash or Inkling Small?

GLM-5.3-Flash is the better all-round choice, scoring 80/100 against Inkling Small (70). It leads on capability, price and inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, GLM-5.3-Flash or Inkling Small?

GLM-5.3-Flash is cheaper at $0.15 input / $0.50 output per million tokens (official Z.AI API price). Inkling Small costs $0.50 input / $1.20 output per million tokens (median across 11 API providers). At a typical mix of three input tokens to one output token, that is $0.237 per million tokens for GLM-5.3-Flash versus $0.675 for Inkling Small (2.8× as much).

Which scores higher on benchmarks?

GLM-5.3-Flash scores higher on the Capabilities Index (ECI): GLM-5.3-Flash 151.9 (#42 of 148) and Inkling Small 150.2 (#47 of 148). The confidence ranges of the top two overlap (149.4–154.3 vs 147.5–152.1), so treat the gap as small. On individual benchmarks: GPQA Diamond — GLM-5.3-Flash 90.2%, Inkling Small 88.5%; FrontierMath Tiers 1–3 — GLM-5.3-Flash 55.8%, Inkling Small 46.3%; OTIS Mock AIME 2024–2025 — GLM-5.3-Flash 93.9%, Inkling Small 90.0%.

Which is better for coding?

There are no published SWE-bench Verified results for GLM-5.3-Flash and Inkling Small yet, so there is no like-for-like coding score. On overall capability, GLM-5.3-Flash leads, which tends to carry over to coding, but test on your own codebase. Both support tool calling for agent workflows.

Which has the bigger context window?

Inkling Small has the largest context window at 1,048,576 tokens, against 1,000,000 for GLM-5.3-Flash. Maximum output per response: GLM-5.3-Flash up to 131,072, Inkling Small up to 1,048,576 tokens.

Which can read images, PDFs, audio or video?

GLM-5.3-Flash accepts text, images, PDFs and video; Inkling Small accepts text, images and audio. GLM-5.3-Flash handles the widest range of inputs.

Are any of these open source?

Yes, both publish their weights (Apache-2.0), so you can self-host them.

Which is newer?

GLM-5.3-Flash is the newest, released Aug 26, 2026. Inkling Small came out Jul 30, 2026.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.

05 — Keep comparing

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