DeepSeek V4 Flash 0423 vs DeepSeek V4 Flash 0731

DeepSeek V4 Flash 0423 at $0.161 in and $0.322 out and DeepSeek V4 Flash 0731 at $0.103 in and $0.207 out — per million tokens, from the same wallet.

DeepSeek V4 Flash 0423

DeepSeek

0.11¢

for a client proposal

$0.161 in · $0.322 out / 1M

1.05M context · released 4 months ago

Full page →

DeepSeek V4 Flash 0731

DeepSeek

0.07¢

for a client proposal

$0.103 in · $0.207 out / 1M

1.05M context · released 1 month ago

Full page →

Asking all both at once — identical prompt, identical context — costs about 0.17¢ for a typical client proposal.

At a glance

Cheapest input: DeepSeek V4 Flash 0731 at $0.103 per million tokens.
Cheapest output: DeepSeek V4 Flash 0731 at $0.207 per million tokens.
Identical context windows: 1.05M tokens each.

Cost per task

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

Quick code fix

2K in · 500 out

DeepSeek V4 Flash 0423

0.05¢

DeepSeek V4 Flash 0731

0.03¢

Draft a client proposal from notes

5K in · 800 out

DeepSeek V4 Flash 0423

0.11¢

DeepSeek V4 Flash 0731

0.07¢

Context-heavy session (Alyph workspace)

155K in · 4K out

DeepSeek V4 Flash 0423

2.6¢

DeepSeek V4 Flash 0731

1.7¢

Analyze a 50-page legal contract

35K in · 1K out

DeepSeek V4 Flash 0423

0.6¢

DeepSeek V4 Flash 0731

0.38¢

Large architecture refactor

250K in · 3K out

DeepSeek V4 Flash 0423

4.1¢

DeepSeek V4 Flash 0731

2.6¢

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

DeepSeek V4 Flash 0423

DeepSeek V4 Flash 0731

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

Pricing

DeepSeek V4 Flash 0423

DeepSeek V4 Flash 0731

Input / 1M tokens

$0.161

$0.103

Output / 1M tokens

$0.322

$0.207

Cached input / 1M

$0.032

$0.021

Specs

DeepSeek V4 Flash 0423

DeepSeek V4 Flash 0731

Provider

DeepSeek

Released

4 months ago

1 month ago

Context window

1.05M

Max output

393K

384K

Input

Text

Output

Text

Reasoning

Shows its thinking

Knowledge cutoff

—

Try it with real numbers

2K tokens in · 500 tokens out.

DeepSeek V4 Flash 0423

DeepSeek

0.05¢

for this task

67% input · 33% output

Full pricing →

DeepSeek V4 Flash 0731

DeepSeek

0.03¢

for this task

67% input · 33% output

Full pricing →

All 2, same prompt and context: 0.08¢. That is the entire cost of the comparison.

Your $5 welcome credit covers about 6,301 of these.

Which should you pick?

On price, DeepSeek V4 Flash 0731 is the cheapest of the two on a typical task, at about 0.07¢.

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 →

DeepSeek V4 Flash 0423 pricing →DeepSeek V4 Flash 0731 pricing →Add Lyria 3 Clip Preview Add Grok 4.20

Questions, answered

Which is cheaper, DeepSeek V4 Flash 0423 or DeepSeek V4 Flash 0731?

On a typical client proposal (5K tokens in, 800 out): DeepSeek V4 Flash 0731 at 0.07¢; DeepSeek V4 Flash 0423 at 0.11¢. Long prompts can change the order when long-context rates apply.

Which has the largest context window?

They are identical — 1.05M tokens each, about 1,500 pages.

Can I run DeepSeek V4 Flash 0423 and DeepSeek V4 Flash 0731 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 0.17¢ for a typical task.

Ask both at once

Identical prompt, identical context, answers side by side — about 0.17¢ for a typical client proposal. Free to start, with $5 of credit.