AI model comparison

Step 3.7 Flash vs GLM 4.6

Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.

Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model.

Input / 1M
$0.20
Output / 1M
$1.15
Context
262K

Compared with GLM-4.5, this generation brings several key improvements: Longer context window: The context window has been expanded from 128K to 200K tokens, enabling the model to handle more complex

Input / 1M
$0.43
Output / 1M
$1.75
Context
205K

At a glance

Quick verdict

How the two models stack up on the things people ask about most.

Lower price

stepfun logo

Step 3.7 Flash

1.8x cheaper for a typical chat

Higher intelligence score

stepfun logo

Step 3.7 Flash

19.5 vs 18.5 on Artificial Analysis

Larger context window

stepfun logo

Step 3.7 Flash

262K vs 205K tokens

Newer release

stepfun logo

Step 3.7 Flash

Released May 28, 2026

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

stepfun logoStep 3.7 Flash19.5
z-ai logoGLM 4.618.5

Coding index

stepfun logoStep 3.7 Flash39.6
z-ai logoGLM 4.645.8

Agentic index

stepfun logoStep 3.7 FlashNot available
z-ai logoGLM 4.6Not available

Pricing

Step 3.7 Flash vs GLM 4.6 API pricing

Per-token API rates. Cheaper option highlighted.

Metricstepfun logoStep 3.7 Flashz-ai logoGLM 4.6
Input tokensPer 1M tokens$0.20$0.43
Output tokensPer 1M tokens$1.15$1.75
Cached input (read)Per 1M tokens$0.04$0.08
Cache writePer 1M tokensNot availableNot available

What it costs in practice

Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.

Chat message

2K in, 500 out

stepfun logoStep 3.7 Flash$0.98
z-ai logoGLM 4.6$1.74

Coding task

30K in, 4K out

stepfun logoStep 3.7 Flash$10.60$5.80 cached
z-ai logoGLM 4.6$19.90$9.40 cached

Long document summary

150K in, 2K out

stepfun logoStep 3.7 Flash$32.30$8.30 cached
z-ai logoGLM 4.6$68$15.50 cached

Specs

Context window and capabilities

How much each model can read, how much it can write, and what it accepts as input.

Metricstepfun logoStep 3.7 Flashz-ai logoGLM 4.6
Context window262K tokens205K tokens
Max output230K tokens16K tokens
Input typesImage, Text, VideoText
Output typesTextText
Reasoning effort levelsHigh, Medium, LowNot available
Default reasoning effortMediumNot available
Release dateMay 28, 2026September 30, 2025

Features

Supported features

API features available for each model.

Metricstepfun logoStep 3.7 Flashz-ai logoGLM 4.6
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedSupported
TemperatureSupportedSupported
Stop sequencesSupportedSupported
Deterministic seedSupportedSupported
Verbosity controlNot supportedNot supported

Our take

Step 3.7 Flash is 1.8x cheaper for a typical chat. Step 3.7 Flash scores higher on the Artificial Analysis Intelligence Index (19.5 vs 18.5). Step 3.7 Flash has the larger context window (262K vs 205K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.

FAQ

Frequently asked questions

Is Step 3.7 Flash or GLM 4.6 cheaper?

Step 3.7 Flash is cheaper for a typical chat (2K input tokens and 500 output tokens). Step 3.7 Flash costs $0.20 per 1M input tokens and $1.15 per 1M output tokens, while GLM 4.6 costs $0.43 per 1M input tokens and $1.75 per 1M output tokens.

Which has a bigger context window, Step 3.7 Flash or GLM 4.6?

Step 3.7 Flash supports up to 262K tokens of context, compared with 205K for GLM 4.6.

Is Step 3.7 Flash smarter than GLM 4.6?

On the Artificial Analysis Intelligence Index, Step 3.7 Flash scores 19.5 and GLM 4.6 scores 18.5, putting Step 3.7 Flash ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.

Can I use Step 3.7 Flash and GLM 4.6 at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Step 3.7 Flash and GLM 4.6 answer side by side and keep the better response.

stepfun logoz-ai logo

Why choose? Ask both.

Send one prompt to Step 3.7 Flash and GLM 4.6 at the same time. Compare the answers side by side and keep the best one.