Palmyra X5 vs Grok 4.20

Palmyra X5 at $0.690 in and $6.90 out and Grok 4.20 at $1.44 in and $2.88 out — per million tokens, from the same wallet.

Palmyra X5

Writer

0.9¢

for a client proposal

$0.690 in · $6.90 out / 1M

1.04M context · released 7 months ago

Full page →

Grok 4.20

xAI

0.95¢

for a client proposal

$1.44 in · $2.88 out / 1M

2M context · released 4 months ago

Full page →

Asking all both at once — identical prompt, identical context — costs about 1.8¢ for a typical client proposal.

At a glance

Cheapest input: Palmyra X5 at $0.690 per million tokens.
Cheapest output: Grok 4.20 at $2.88 per million tokens.
Largest context: Grok 4.20 at 2M tokens — about 2,900 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

Palmyra X5

0.48¢

Grok 4.20

0.43¢

Draft a client proposal from notes

5K in · 800 out

Palmyra X5

0.9¢

Grok 4.20

0.95¢

Context-heavy session (Alyph workspace)

155K in · 4K out

Palmyra X5

$0.13

Grok 4.20

$0.23

Analyze a 50-page legal contract

35K in · 1K out

Palmyra X5

3.1¢

Grok 4.20

$0.05

Large architecture refactor

250K in · 3K out

Palmyra X5

$0.19

Grok 4.20

$0.74

Long-context rate applied at this input size.

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

Palmyra X5

Grok 4.20

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

Pricing

Palmyra X5

Grok 4.20

Input / 1M tokens

$0.690

$1.44

Output / 1M tokens

$6.90

$2.88

Cached input / 1M

—

$0.230

Web search

—

0.57¢ / search

Specs

Palmyra X5

Grok 4.20

Provider

Writer

xAI

Released

7 months ago

4 months ago

Context window

1.04M

Max output

—

Input

Text

Text, Images, and Files

Output

Text

Reasoning

Answers directly

Shows its thinking

Knowledge cutoff

—

2025-09-01

Try it with real numbers

2K tokens in · 500 tokens out.

Palmyra X5

Writer

0.48¢

for this task

29% input · 71% output

Full pricing →

Grok 4.20

xAI

0.43¢

for this task

67% input · 33% output

Full pricing →

All 2, same prompt and context: 0.91¢. That is the entire cost of the comparison.

Your $5 welcome credit covers about 546 of these.

Which should you pick?

For long documents, Grok 4.20 has the largest context window here — 2M tokens.

On price, Palmyra X5 is the cheapest of the two on a typical task, at about 0.9¢.

For images or files, Grok 4.20 can read them directly; Palmyra X5 is text-only.

If you want to watch the model think, Grok 4.20 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 →

Palmyra X5 pricing →Grok 4.20 pricing →Add Lyria 3 Clip Preview Add Grok 4.20 Multi-Agent

Questions, answered

Which is cheaper, Palmyra X5 or Grok 4.20?

On a typical client proposal (5K tokens in, 800 out): Palmyra X5 at 0.9¢; Grok 4.20 at 0.95¢. Long prompts can change the order when long-context rates apply.

Which has the largest context window?

Grok 4.20 — 2M tokens, about 2,900 pages.

Can I run Palmyra X5 and Grok 4.20 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 1.8¢ for a typical task.

Ask both at once

Identical prompt, identical context, answers side by side — about 1.8¢ for a typical client proposal. Free to start, with $5 of credit.