2 models · 302 observations · under measurement since 13 Aug

Claude Fable 5 vs Grok 4.6

Kyma serves all of these, so the availability, throughput and latency below are its own readings rather than anybody's marketing. What each creator publishes about its own model is further down, kept separate, and clearly theirs.

Measured by Kyma302 observationssince 13 Aug
AnthropicClaude Fable 5

Anthropic

138 obs

since 13 Aug

102 from Kyma's own probe

xAIGrok 4.6

xAI

164 obs

since 13 Aug

98 from Kyma's own probe

Availability, and how much of it we can actually see

Successful observations divided by total observations over the last 30 days, counting Kyma's own probe and real customer requests the same way. Same method and same figures as /models.

kymaapi.com
AnthropicClaude Fable 5
xAIGrok 4.6
100.0%
97.6%
96%97.8%100%

The tinted band is the measurement's own grain. It is 2.2 points wide, which is what three failed requests are worth in the thinnest sample on this page. One or two is what luck looks like, so a lead has to clear all three before this page will call it. Scale starts at 96%, not at zero, and dot size is the size of the sample behind the figure.

Claude Fable 5 is ahead at 100.0%, by more than the thinnest sample here could produce by chance on 138 observations.

Anything inside the band is level with the leader as far as this measurement can tell. Anything left of it is genuinely behind.

Throughput

Median tokens per second, from one identical prompt sent to every model every six hours, so the only variable left between two rows is the model.

AnthropicClaude Fable 5
14 tok/s
xAIGrok 4.6
58 tok/s
Longer is better.

Latency

Median time to a complete response on that same fixed prompt. It moves with output length, so it is a reading on one prompt rather than a promise about yours.

AnthropicClaude Fable 5
3.94 s
xAIGrok 4.6
4.43 s
Shorter is better.
Price on Kyma

What a request costs today, per 1M tokens. A model on offer shows the rate you are actually charged and the date it returns to list.

FactAnthropicClaude Fable 5xAIGrok 4.6

Input

per 1M tokens

$13.50$2.70

Output

per 1M tokens

$67.50$8.10

Cached input

repeated prefixes

not supportednot supported
Published by the creator

The specification each creator publishes for its own model, read straight from the catalogue Kyma serves from. Nothing in this block is a Kyma opinion.

FactAnthropicClaude Fable 5xAIGrok 4.6

Context window

tokens in one request

1M500K

Max output

ceiling on one response

128K8K

Accepts

Text, image, fileText, image, file

Tool calling

YesYes

Reasoning

YesYes

Vision input

YesYes

Weights

Closed
Closed

Below release precision

narrower than the creator shipped

Not establishedNot established

What this instrument does not measure

This page carries no benchmark scores, so it will not tell you which model is smarter. It tells you which is cheaper, which is faster, which stays up, and what each one accepts. For the quality question, run both on your own prompts: one key, one line changed, and the answer is about your work rather than someone else's test set.

Every model above runs on one key and one balance. $0.50 of free credit on signup, no card.Get API key

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