ZMIME
Comparison · 3 models · Updated Oct 4, 2026

Step 3.5 Flash vs Granite-4.0-H-Small vs GLM-4.7-FlashX

Too close to call on our weighted score (Granite-4.0-H-Small 63, Step 3.5 Flash 62, GLM-4.7-FlashX 61). The right pick depends on what you value most.

  1. StepFun

    Step 3.5 Flash

    Released Jan 29, 2026

    62/100
    • ECI—
    • Price$0.10 / $0.30
    • Context256K
  2. IBM

    Granite-4.0-H-Small

    Released Oct 2, 2025

    63/100
    • ECI—
    • Price$0.064 / $0.265
    • Context131K
  3. Z.ai (Zhipu)

    GLM-4.7-FlashX

    Released Jan 19, 2026

    61/100
    • ECI—
    • Price$0.07 / $0.40
    • Context200K
01 — Verdict

Too close to call

It is close. Our weighted score puts them within a point (Granite-4.0-H-Small 63/100, Step 3.5 Flash 62/100, GLM-4.7-FlashX 61/100), so choose by what matters most for your work: Granite-4.0-H-Small on price and Step 3.5 Flash for long inputs. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

  • CapabilityNot enough dataNo independent benchmark covers every model here yet
  • Lowest priceGranite-4.0-H-SmallGranite-4.0-H-Small $0.114 · Step 3.5 Flash $0.15 · GLM-4.7-FlashX $0.152 per 1M tokens (3:1 blend)
  • Longest contextStep 3.5 FlashStep 3.5 Flash 256,000 · GLM-4.7-FlashX 200,000 · Granite-4.0-H-Small 131,072 tokens
  • Widest inputsSame inputsStep 3.5 Flash: Text · Granite-4.0-H-Small: Text · GLM-4.7-FlashX: Text
  • Self-hostingAll open weightsEvery model here can be downloaded and run on your own hardware
How the score is built
MeasureWeightStep 3.5 FlashGranite-4.0-H-SmallGLM-4.7-FlashX
Price50%899589
Inputs & features30%353535
Context window20%362432
Overall100%62/10063/10061/100

Left out because at least one model lacks the data: capability. The remaining weights were rescaled.

02 — Side by side

Every spec in one table

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

Step 3.5 Flash vs Granite-4.0-H-Small vs GLM-4.7-FlashX specifications side by side
SpecificationStep 3.5 FlashStepFunGranite-4.0-H-SmallIBMGLM-4.7-FlashXZ.ai (Zhipu)
Capability
Capabilities Index (ECI)———
ECI rank———
Price per million tokens
Input$0.10$0.064 (best)$0.07
Output$0.30$0.265 (best)$0.40
Cached input$0.02—$0.01 (best)
Blended (3:1)$0.15$0.114 (best)$0.152
Long-context rateSame rateSame rateSame rate
Price sourceOfficial StepFun (Global) APIOfficial watsonx.ai APIOfficial Z.AI API
Limits
Context window256,000 tokens (best)131,072 tokens200,000 tokens
Max output256,000 tokens (best)131,072 tokens131,072 tokens
Inputs and features
TextYesYesYes
ImagesNoNoNo
PDFsNoNoNo
AudioNoNoNo
VideoNoNoNo
ReasoningYeslow · highNoYes
Tool callingYesYesYes
Structured outputNoYesNo
Availability
WeightsOpenOpenOpen
API model IDstep-3.5-flashibm/granite-4-h-smallglm-4.7-flashx
API providers8 (best)18 (best)
ReleasedJan 29, 2026Oct 2, 2025Jan 19, 2026
Knowledge cutoffJan 2025—Apr 2025
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.

  • Step 3.5 Flash$1.60
  • Granite-4.0-H-Small$1.17
  • GLM-4.7-FlashX$1.50
04 — Questions

Which should you choose?

Which is better: Step 3.5 Flash, Granite-4.0-H-Small or GLM-4.7-FlashX?

It is close. Our weighted score puts them within a point (Granite-4.0-H-Small 63/100, Step 3.5 Flash 62/100, GLM-4.7-FlashX 61/100), so choose by what matters most for your work: Granite-4.0-H-Small on price and Step 3.5 Flash for long inputs. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

Which is cheaper, Step 3.5 Flash, Granite-4.0-H-Small or GLM-4.7-FlashX?

Granite-4.0-H-Small is cheaper at $0.064 input / $0.265 output per million tokens (official watsonx.ai API price). Step 3.5 Flash costs $0.10 input / $0.30 output per million tokens (official StepFun (Global) API price); GLM-4.7-FlashX costs $0.07 input / $0.40 output per million tokens (official Z.AI API price). At a typical mix of three input tokens to one output token, that is $0.114 per million tokens for Granite-4.0-H-Small versus $0.15 for Step 3.5 Flash (1.3× as much) and $0.152 for GLM-4.7-FlashX (1.3× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers all three models yet. Step 3.5 Flash has not been scored yet, Granite-4.0-H-Small has not been scored yet and GLM-4.7-FlashX has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for Step 3.5 Flash, Granite-4.0-H-Small and GLM-4.7-FlashX yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three support tool calling for agent workflows.

Which has the bigger context window?

Step 3.5 Flash has the largest context window at 256,000 tokens, against 200,000 for GLM-4.7-FlashX and 131,072 for Granite-4.0-H-Small. Maximum output per response: Step 3.5 Flash up to 256,000, Granite-4.0-H-Small up to 131,072, GLM-4.7-FlashX up to 131,072 tokens.

Which can read images, PDFs, audio or video?

Step 3.5 Flash accepts text; Granite-4.0-H-Small accepts text; GLM-4.7-FlashX accepts text. They handle the same number of input types.

Are any of these open source?

Yes, all three publish their weights, so you can self-host them.

Which is newer?

Step 3.5 Flash is the newest, released Jan 29, 2026. GLM-4.7-FlashX came out Jan 19, 2026; Granite-4.0-H-Small came out Oct 2, 2025. Knowledge cutoff: Step 3.5 Flash Jan 2025, GLM-4.7-FlashX Apr 2025.

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.