Qwen Plus 0728 vs Step 3.7 Flash

Qwen Plus 0728 at $0.299 in and $0.897 out and Step 3.7 Flash at $0.230 in and $1.32 out — per million tokens, from the same wallet.

Qwen Plus 0728

Qwen

0.22¢

for a client proposal

$0.299 in · $0.897 out / 1M

1M context · released September 2025

Full page →

Step 3.7 Flash

StepFun

0.22¢

for a client proposal

$0.230 in · $1.32 out / 1M

256K context · released 2 months ago

Full page →

Asking all both at once — identical prompt, identical context — costs about 0.44¢ for a typical client proposal.

At a glance

Cheapest input: Step 3.7 Flash at $0.230 per million tokens.
Cheapest output: Qwen Plus 0728 at $0.897 per million tokens.
Largest context: Qwen Plus 0728 at 1M tokens — about 1,400 pages.

Cost per task

Estimated totals at the rates above. Solid bar is input, lighter bar is output.

Quick code fix

2K in · 500 out

Qwen Plus 0728

0.1¢

Step 3.7 Flash

0.11¢

Draft a client proposal from notes

5K in · 800 out

Qwen Plus 0728

0.22¢

Step 3.7 Flash

0.22¢

Context-heavy session (Alyph workspace)

155K in · 4K out

Qwen Plus 0728

5¢

Step 3.7 Flash

4.1¢

Analyze a 50-page legal contract

35K in · 1K out

Qwen Plus 0728

1.1¢

Step 3.7 Flash

0.94¢

Large architecture refactor

250K in · 3K out

Qwen Plus 0728

$0.08

Step 3.7 Flash

$0.06

Solid part of each bar is input tokens, the lighter part is output. Models that don’t fit a task are marked instead of priced.

Cost vs Token Amount

Drag the slider to adjust the split between input and output workload.

80% Input20% Output

Qwen Plus 0728

Step 3.7 Flash

Adjust the ratio slider to change how output tokens influence the final price for equivalent workloads.

Pricing

Qwen Plus 0728

Step 3.7 Flash

Input / 1M tokens

$0.299

$0.230

Output / 1M tokens

$0.897

$1.32

Cached input / 1M

—

$0.046

Specs

Qwen Plus 0728

Step 3.7 Flash

Provider

Qwen

StepFun

Released

September 2025

2 months ago

Context window

256K

Max output

33K

256K

Input

Text

Text, Images, and Video

Output

Text

Reasoning

Answers directly

Shows its thinking

Knowledge cutoff

2025-03-31

—

Try it with real numbers

2K tokens in · 500 tokens out.

Qwen Plus 0728

Qwen

0.1¢

for this task

57% input · 43% output

Full pricing →

Step 3.7 Flash

StepFun

0.11¢

for this task

41% input · 59% output

Full pricing →

All 2, same prompt and context: 0.22¢. That is the entire cost of the comparison.

Your $5 welcome credit covers about 2,306 of these.

Which should you pick?

For long documents, Qwen Plus 0728 has the largest context window here — 1M tokens.

On price, Step 3.7 Flash is the cheapest of the two on a typical task, at about 0.22¢.

For images or files, Step 3.7 Flash can read them directly; Qwen Plus 0728 is text-only.

If you want to watch the model think, Step 3.7 Flash shows reasoning; the other answers directly.

Or don’t pick. Send the identical prompt to all both, read the answers side by side, and keep the winner. How to run a fair bake-off →

Qwen Plus 0728 pricing →Step 3.7 Flash pricing →Add Lyria 3 Clip Preview Add Grok 4.20

Questions, answered

Which is cheaper, Qwen Plus 0728 or Step 3.7 Flash?

On a typical client proposal (5K tokens in, 800 out): Step 3.7 Flash at 0.22¢; Qwen Plus 0728 at 0.22¢. Long prompts can change the order when long-context rates apply.

Which has the largest context window?

Qwen Plus 0728 — 1M tokens, about 1,400 pages.

Can I run Qwen Plus 0728 and Step 3.7 Flash side by side on Alyph?

Yes — that is what Alyph is built for: the identical prompt with identical context to all 2, answers rendered side by side, billed from one wallet. This exact combination costs about 0.44¢ for a typical task.

Ask both at once

Identical prompt, identical context, answers side by side — about 0.44¢ for a typical client proposal. Free to start, with $5 of credit.