Pairwise benchmark snapshot · Aug 16, 2026

Claude Fable 5 vs Grok 4.6 benchmark

Name: Claude Fable 5 vs Grok 4.6 AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Claude Fable 5 (Anthropic) and Grok 4.6 (xAI) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Claude Fable 5 is ahead by 24 points (1,616 vs 1,592; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, Claude Fable 5 resolves 80% versus 69.1% (seed-bootstrap (Aug 16, 2026)). Grok 4.6 streams faster (118 tok/s) while Grok 4.6 is the cheaper output token ($6/1M). Claude Fable 5 has the larger context window (1M tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

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Anthropic

Claude Fable 5

Anthropic top-tier long-horizon model. Official API $10/$50 per 1M tokens (Claude Platform pricing, Aug 2026).

Elo 1,616$50/1M out

xAI

Grok 4.6

xAI Aug 12 2026 post-training refresh of Grok 4.5. Same $2/$6 API price, 500k context, stronger agentic traces.

Elo 1,592$6/1M out

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Model A

Model B

Quick vs:vs Claude Opus 4.5 vs Claude Opus 4.6 vs Claude Sonnet 4.5 vs Claude 3.7 Sonnet

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Fable 5 (6)vsGrok 4.6 (4)

Claude Fable 5: 6W (60%)Overall: Claude Fable 5Grok 4.6: 4W (40%)

← Claude Fable 5Grok 4.6 →

Claude Fable 5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,616vs1,592

Coding Elo

1,622vs1,568

SWE-bench

80%vs69.1%

LiveBench

75.2%vs71.4%

GPQA Diamond

87.6%vs84.6%

Claude Fable 5: 5WGrok 4.6: 0W

Grok 4.6 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

58 tok/svs118 tok/s

Time to first token

340 msvs195 ms

Claude Fable 5: 0WGrok 4.6: 2W

Grok 4.6 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$50/1Mvs$6/1M

Input price

$10/1Mvs$2/1M

Context window

1Mvs500k

Claude Fable 5: 1WGrok 4.6: 2W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageClaude Fable 5 4/6

Preference Elo

Claude Fable 5

24 pts advantage

Throughput Speed

Grok 4.6

60 tok/s faster

Price Efficiency

Grok 4.6

$44.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

+2%1,616

EloHigh is better

1,592

Code Elo

High is better

+3%1,622

Code EloHigh is better

1,568

LiveBench

High is better

+5%75.2%

LiveBenchHigh is better

71.4%

SWE-bench

High is better

+16%80%

SWE-benchHigh is better

69.1%

GPQA

High is better

+4%87.6%

GPQAHigh is better

84.6%

TTFT

Low is better

340 ms

TTFTLow is better

195 ms+74%

Speed

High is better

58 tok/s

SpeedHigh is better

118 tok/s+103%

In $

Low is better

$10/1M

In $Low is better

$2/1M+400%

Out $

Low is better

$50/1M

Out $Low is better

$6/1M+733%

Context

High is better

+100%1M

ContextHigh is better

500k

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 85% with Grok 4.6

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

Claude Fable 5$1,100.00 / mo

In: $350.00Out: $750.00

Grok 4.6$160.00 / mo

In: $70.00Out: $90.00

Estimated Cost Delta

Grok 4.6 is estimated to save $940.00/month ($11,280/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
Claude Fable 5:Pick Claude Fable 5 when repo-level coding accuracy is the constraint.
2
Grok 4.6:Pick Grok 4.6 when you are optimizing output cost.
3
Grok 4.6:Pick Grok 4.6 when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsClaude Fable 5

Higher SWE-bench (80%).

High-volume chatGrok 4.6

Lower output list price ($6/1M).

Voice / low-latency UIGrok 4.6

Lower TTFT (195 ms).

Long-document RAGClaude Fable 5

Larger window (1M).

Screenshots / visionClaude Fable 5

Both accept images. Defaulting to the higher-Elo side (Claude Fable 5).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Fable 5	Higher SWE-bench (80%).
High-volume chat	Grok 4.6	Lower output list price ($6/1M).
Voice / low-latency UI	Grok 4.6	Lower TTFT (195 ms).
Long-document RAG	Claude Fable 5	Larger window (1M).
Screenshots / vision	Claude Fable 5	Both accept images. Defaulting to the higher-Elo side (Claude Fable 5).

Related Editorial Dispatches & Benchmark Notes

View all news

compareAug 12, 2026

Grok vs ChatGPT: price and Elo, not a personality contest

Brand hub remaps to top xAI vs top OpenAI. After Aug 12 that is Grok 4.6 vs Sol.

launchAug 12, 2026

Grok 4.6 (Aug 12): post-training refresh, same $2/$6 list

xAI’s Aug 12 2026 refresh of Grok 4.5. 500k context. The Grok vs ChatGPT hub remaps here.

launchJun 15, 2026

Claude Fable 5: the $10/$50 long-horizon Anthropic SKU

Fable 5 is not Sonnet with extra adjectives. It is the expensive long-horizon row. Read SWE-bench and output price together.

launchJul 10, 2025

Grok 4 remains the previous xAI flagship on this catalog

2025-07 row. 4.6 is the buy. We keep 4 so upgrade pairs and old inbound links resolve.

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LIVE

Anthropic

Claude Fable 5

Elo 1,616

LiveBench75.2%

SWE-bench80%

Speed58 tok/s

Output cost$50/1M

xAI

Grok 4.6

Elo 1,592

LiveBench71.4%

SWE-bench69.1%

Speed118 tok/s

Output cost$6/1M

Frequently Asked Questions

Which is better overall, Claude Fable 5 or Grok 4.6?: Claude Fable 5 has the higher preference Elo in our latest snapshot (1,616). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Claude Fable 5 or Grok 4.6?: Claude Fable 5 leads SWE-bench at 80% vs 69.1%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: Grok 4.6 output tokens are $6/1M versus $50/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Fable 5 or Grok 4.6?: Grok 4.6 has the lower time-to-first-token (195 ms vs 340 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: Claude Fable 5 accepts 1M tokens versus 500k.
Can I self-host either model?: Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?: No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?: Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude Fable 5 and Grok 4.6 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude Fable 5 matchups →|All Grok 4.6 matchups →

Grok 4.6 vs Grok 4 (previous grok)Claude Opus 5 vs Claude Fable 5 Claude Opus 4.8 vs Grok 4.6 Claude Opus 4.6 vs Grok 4.6 Claude Opus 4.5 vs Grok 4.6 Claude Sonnet 5 vs Grok 4.6

Claude Fable 5 vs Grok 4.6 benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Fable 5 (6)vsGrok 4.6 (4)

Claude Fable 5: 6W (60%)Overall: Claude Fable 5Grok 4.6: 4W (40%)

← Claude Fable 5Grok 4.6 →

Claude Fable 5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,616vs1,592

Coding Elo

1,622vs1,568

SWE-bench

80%vs69.1%

LiveBench

75.2%vs71.4%

GPQA Diamond

87.6%vs84.6%

Claude Fable 5: 5WGrok 4.6: 0W

Grok 4.6 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

58 tok/svs118 tok/s

Time to first token

340 msvs195 ms

Claude Fable 5: 0WGrok 4.6: 2W

Grok 4.6 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$50/1Mvs$6/1M

Input price

$10/1Mvs$2/1M

Context window

1Mvs500k

Claude Fable 5: 1WGrok 4.6: 2W

Recommended Workload Routing

Repo / coding agentsClaude Fable 5

Higher SWE-bench (80%).

High-volume chatGrok 4.6

Lower output list price ($6/1M).

Voice / low-latency UIGrok 4.6

Lower TTFT (195 ms).

Long-document RAGClaude Fable 5

Larger window (1M).

Screenshots / visionClaude Fable 5

Both accept images. Defaulting to the higher-Elo side (Claude Fable 5).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Fable 5	Higher SWE-bench (80%).
High-volume chat	Grok 4.6	Lower output list price ($6/1M).
Voice / low-latency UI	Grok 4.6	Lower TTFT (195 ms).
Long-document RAG	Claude Fable 5	Larger window (1M).
Screenshots / vision	Claude Fable 5	Both accept images. Defaulting to the higher-Elo side (Claude Fable 5).

Frequently Asked Questions

Which is better overall, Claude Fable 5 or Grok 4.6?

Claude Fable 5 has the higher preference Elo in our latest snapshot (1,616). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, Claude Fable 5 or Grok 4.6?

Claude Fable 5 leads SWE-bench at 80% vs 69.1%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

Grok 4.6 output tokens are $6/1M versus $50/1M. Input prices and retry rates still move the real bill.

Which is faster, Claude Fable 5 or Grok 4.6?

Grok 4.6 has the lower time-to-first-token (195 ms vs 340 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

Claude Fable 5 accepts 1M tokens versus 500k.

Can I self-host either model?

Neither model is marked open-weights here. You are comparing hosted APIs.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude Fable 5 and Grok 4.6 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

Claude Fable 5

Grok 4.6

Grok 4.6

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Grok vs ChatGPT: price and Elo, not a personality contest

Grok 4.6 (Aug 12): post-training refresh, same $2/$6 list

Claude Fable 5: the $10/$50 long-horizon Anthropic SKU

Grok 4 remains the previous xAI flagship on this catalog

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CompareLLM Matrix

Claude Fable 5

Grok 4.6

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

Claude Fable 5

Grok 4.6

Grok 4.6

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Grok vs ChatGPT: price and Elo, not a personality contest

Grok 4.6 (Aug 12): post-training refresh, same $2/$6 list

Claude Fable 5: the $10/$50 long-horizon Anthropic SKU

Grok 4 remains the previous xAI flagship on this catalog

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Fable 5

Grok 4.6

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons