AI model comparison

Step 3.5 Flash vs GLM 4.7 Flash

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

Step 3.5 Flash is StepFun's most capable open-source foundation model.

Input / 1M
$0.10
Output / 1M
$0.30
Context
262K

As a 30B-class SOTA model, GLM-4.7-Flash offers a new option that balances performance and efficiency.

Input / 1M
$0.06
Output / 1M
$0.40
Context
200K

At a glance

Quick verdict

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

Lower price

z-ai logo

GLM 4.7 Flash

1.1x cheaper for a typical chat

Higher intelligence score

stepfun logo

Step 3.5 Flash

17 vs 14.9 on Artificial Analysis

Larger context window

stepfun logo

Step 3.5 Flash

262K vs 200K tokens

Newer release

stepfun logo

Step 3.5 Flash

Released January 29, 2026

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

stepfun logoStep 3.5 Flash17
z-ai logoGLM 4.7 Flash14.9

Coding index

stepfun logoStep 3.5 FlashNot available
z-ai logoGLM 4.7 FlashNot available

Agentic index

stepfun logoStep 3.5 FlashNot available
z-ai logoGLM 4.7 FlashNot available

Pricing

Step 3.5 Flash vs GLM 4.7 Flash API pricing

Per-token API rates. Cheaper option highlighted.

Metricstepfun logoStep 3.5 Flashz-ai logoGLM 4.7 Flash
Input tokensPer 1M tokens$0.10$0.06
Output tokensPer 1M tokens$0.30$0.40
Cached input (read)Per 1M tokensNot availableNot available
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 3.5 Flash$0.35
z-ai logoGLM 4.7 Flash$0.32

Coding task

30K in, 4K out

stepfun logoStep 3.5 Flash$4.20
z-ai logoGLM 4.7 Flash$3.42

Long document summary

150K in, 2K out

stepfun logoStep 3.5 Flash$15.60
z-ai logoGLM 4.7 Flash$9.88

Specs

Context window and capabilities

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

Metricstepfun logoStep 3.5 Flashz-ai logoGLM 4.7 Flash
Context window262K tokens200K tokens
Max output66K tokens118K tokens
Input typesTextText
Output typesTextText
Reasoning effort levelsNot availableNot available
Default reasoning effortNot availableNot available
Release dateJanuary 29, 2026January 19, 2026

Features

Supported features

API features available for each model.

Metricstepfun logoStep 3.5 Flashz-ai logoGLM 4.7 Flash
Tool callingSupportedSupported
Structured outputsNot supportedSupported
JSON modeNot supportedSupported
ReasoningSupportedSupported
TemperatureSupportedSupported
Stop sequencesNot supportedSupported
Deterministic seedNot supportedSupported
Verbosity controlNot supportedNot supported

Our take

GLM 4.7 Flash is 1.1x cheaper for a typical chat. Step 3.5 Flash scores higher on the Artificial Analysis Intelligence Index (17 vs 14.9). Step 3.5 Flash has the larger context window (262K vs 200K 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 3.5 Flash or GLM 4.7 Flash cheaper?

GLM 4.7 Flash is cheaper for a typical chat (2K input tokens and 500 output tokens). GLM 4.7 Flash costs $0.06 per 1M input tokens and $0.40 per 1M output tokens, while Step 3.5 Flash costs $0.10 per 1M input tokens and $0.30 per 1M output tokens.

Which has a bigger context window, Step 3.5 Flash or GLM 4.7 Flash?

Step 3.5 Flash supports up to 262K tokens of context, compared with 200K for GLM 4.7 Flash.

Is Step 3.5 Flash smarter than GLM 4.7 Flash?

On the Artificial Analysis Intelligence Index, Step 3.5 Flash scores 17 and GLM 4.7 Flash scores 14.9, putting Step 3.5 Flash ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.

Can I use Step 3.5 Flash and GLM 4.7 Flash at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Step 3.5 Flash and GLM 4.7 Flash answer side by side and keep the better response.

stepfun logoz-ai logo

Why choose? Ask both.

Send one prompt to Step 3.5 Flash and GLM 4.7 Flash at the same time. Compare the answers side by side and keep the best one.