Aion-2.0 vs Relace Apply 3

Aion-2.0 at $0.920 in and $1.84 out and Relace Apply 3 at $0.978 in and $1.44 out — per million tokens, from the same wallet.

Aion-2.0

AionLabs

0.61¢

for a client proposal

$0.920 in · $1.84 out / 1M

131K context · released 9 months ago

Full page →

Relace Apply 3

Relace

0.6¢

for a client proposal

$0.978 in · $1.44 out / 1M

256K context · released September 2025

Full page →

Asking all both at once — identical prompt, identical context — costs about 1.2¢ for a typical client proposal.

At a glance

Cheapest input: Aion-2.0 at $0.920 per million tokens.
Cheapest output: Relace Apply 3 at $1.44 per million tokens.
Largest context: Relace Apply 3 at 256K tokens — about 370 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

Aion-2.0

0.28¢

Relace Apply 3

0.27¢

Draft a client proposal from notes

5K in · 800 out

Aion-2.0

0.61¢

Relace Apply 3

0.6¢

Context-heavy session (Alyph workspace)

155K in · 4K out

Aion-2.0

needs 155K ctx

Relace Apply 3

$0.16

Analyze a 50-page legal contract

35K in · 1K out

Aion-2.0

3.4¢

Relace Apply 3

3.6¢

Large architecture refactor

250K in · 3K out

Aion-2.0

needs 250K ctx

Relace Apply 3

$0.25

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

Aion-2.0

Relace Apply 3

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

Pricing

Aion-2.0

Relace Apply 3

Input / 1M tokens

$0.920

$0.978

Output / 1M tokens

$1.84

$1.44

Cached input / 1M

$0.230

—

Specs

Aion-2.0

Relace Apply 3

Provider

AionLabs

Relace

Released

9 months ago

September 2025

Context window

131K

256K

Max output

33K

128K

Input

Text

Output

Text

Reasoning

Shows its thinking

Answers directly

Knowledge cutoff

—

Try it with real numbers

2K tokens in · 500 tokens out.

Aion-2.0

AionLabs

0.28¢

for this task

67% input · 33% output

Full pricing →

Relace Apply 3

Relace

0.27¢

for this task

73% input · 27% output

Full pricing →

All 2, same prompt and context: 0.54¢. That is the entire cost of the comparison.

Your $5 welcome credit covers about 920 of these.

Which should you pick?

For long documents, Relace Apply 3 has the largest context window here — 256K tokens.

On price, Relace Apply 3 is the cheapest of the two on a typical task, at about 0.6¢.

If you want to watch the model think, Aion-2.0 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 →

Aion-2.0 pricing →Relace Apply 3 pricing →Add Lyria 3 Clip Preview Add Grok 4.20

Questions, answered

Which is cheaper, Aion-2.0 or Relace Apply 3?

On a typical client proposal (5K tokens in, 800 out): Relace Apply 3 at 0.6¢; Aion-2.0 at 0.61¢. Long prompts can change the order when long-context rates apply.

Which has the largest context window?

Relace Apply 3 — 256K tokens, about 370 pages.

Can I run Aion-2.0 and Relace Apply 3 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 1.2¢ for a typical task.

Ask both at once

Identical prompt, identical context, answers side by side — about 1.2¢ for a typical client proposal. Free to start, with $5 of credit.