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Van Data Team

text model comparison

Claude Fable 5 vs Claude Haiku 5.5

Claude Fable 5 and Claude Haiku 5.5 are both current text models, from Anthropic. Claude Haiku 5.5 is 99% cheaper per 1M input tokens than Claude Fable 5, $0.10 vs $10. On GPQA Diamond, Claude Fable 5 scores 85.9% and Claude Haiku 5.5 89.6% (Epoch AI, measured October 12, 2026). Both accept 1,000,000 tokens of context.

Higher GPQA Diamond
Claude Haiku 5.589.6% against 85.9%
Lower price per 1M input tokens
Claude Haiku 5.5$0.10 against $10
Newer release
Claude Haiku 5.5Oct 2026 against Jun 2026

Data verified October 12, 2026 · Dataset 2026-10-28

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Side by side

Claude Fable 5 and Claude Haiku 5.5, line by line

Prices in effect today, compared at the same tier wherever both list one. The better value in each row is highlighted.

FactClaude Fable 5Claude Haiku 5.5
Price
Price per 1M input tokens$10$0.10 (better)
Price per 1M output tokens$50$0.50 (better)
Independent benchmarks
GPQA Diamond85.9% (#33 of 40)89.6% (#29 of 40) (better)
FrontierMath Tiers 1-3 (v2)87% (#8 of 40) (better)75.1% (#16 of 40)
SimpleQA Verified70.7% (#6 of 36) (better)23.8% (#33 of 36)
Arena Text1504 Elo (#3 of 49)Not measured
Specs
ProviderAnthropicAnthropic
Release dateJune 9, 2026October 7, 2026
AccessAPI onlyAPI only
Context window1,000,000 tokens1,000,000 tokens
Max output128,000 tokens128,000 tokens
Inputtext, imagetext, image
Outputtexttext

Scores:Epoch AI · 2026-10-12Arena · 2026-10-12

Open both in the interactive comparison

Charts

Against every current text model

Where Claude Fable 5 and Claude Haiku 5.5 land among the current models of their task, on every independent benchmark, on price and on context.

Where each stands

On GPQA Diamond, Claude Fable 5 ranks #33 and Claude Haiku 5.5 #29 of 40 current models. Each bar is the share of current models it beats: on score, price and context.

Claude Fable 5 and Claude Haiku 5.5 among the current text models, one row per benchmark, price and context window.

Independent benchmarks

Arena Text

Claude Fable 5:#3of 49

1,504 Elo · ahead of 96%

Claude Haiku 5.5: Not scored

GPQA Diamond

Claude Fable 5:#33of 40

85.9% · ahead of 18%

Claude Haiku 5.5:#29of 40

89.6% · ahead of 28%

FrontierMath Tiers 1-3 (v2)

Claude Fable 5:#8of 40

87% · ahead of 82%

Claude Haiku 5.5:#16of 40

75.1% · ahead of 62%

SimpleQA Verified

Claude Fable 5:#6of 36

70.7% · ahead of 86%

Claude Haiku 5.5:#33of 36

23.8% · ahead of 9%

Price and context

Price per 1M input tokens

Claude Fable 5:#48of 51

$10 · cheaper than 0%

Claude Haiku 5.5:#1of 51

$0.10 · cheaper than 96%

Price per 1M output tokens

Claude Fable 5:#48of 51

$50 · cheaper than 0%

Claude Haiku 5.5:#3of 51

$0.50 · cheaper than 92%

Context window

Claude Fable 5:#28of 66

1M tokens · longer than 22%

Claude Haiku 5.5:#28of 66

1M tokens · longer than 22%

Scores fromArena · 2026-10-12Epoch AI · 2026-10-12

Quality against price

Arena Text · measured October 8, 2026

Claude Fable 5 scores 1,504 at $20 (blended price per 1M tokens). The line joins the current models no other beats on both price and Arena Text score; hover any point to name it.

Quality against priceArena Text score against price for 41 text models, Claude Fable 5 and Claude Haiku 5.5 marked.1,2501,3001,3501,4001,4501,5001,550$0.30$1$3$10MOST ATTRACTIVE QUADRANTMedian price $3Median 1,475Blended price per 1M tokens (3 input : 1 output), log scaleArena Text (Elo)Claude Fable 5
Quality against price: the data
Arena Text score against price for 41 text models, Claude Fable 5 and Claude Haiku 5.5 marked.
ModelProviderBlended price per 1M tokensArena Text (Elo)
Gemini 4 ArgonGoogle$41,525
Claude Opus 5.5Anthropic$81,507
Claude Fable 5Anthropic$201,504
Claude Fable 5.1Anthropic$201,501
Gemini 3.8 FlashGoogle$1.501,497
Muse Spark 1.3Meta$21,494
Claude Opus 5Anthropic$101,490
Kimi K3Moonshot Kimi$61,488
Gemini 3.7 FlashGoogle$1.501,486
GPT-5.6 SolOpenAI$81,485
GPT-6.1 SolOpenAI$41,484
Qwen3.8-MaxAlibaba Qwen$31,483
GPT-5.5OpenAI$111,482
Gemini 3.6 FlashGoogle$31,482
Claude Opus 4.8Anthropic$101,481
MiMo-V2.6-ProXiaomi MiMo$0.541,480
GLM-5.3Z.ai$2.151,478
Claude Sonnet 5.5Anthropic$41,476
GPT-5.4OpenAI$5.631,475
GPT-6 AstraOpenAI$201,475
DeepSeek-V4.1-FlashDeepSeek$0.521,475
GLM-5.3-FlashZ.ai$0.241,475
Gemini 3 Flash PreviewGoogle$1.131,473
Grok 4.20xAI$1.561,472
GPT-5.6 TerraOpenAI$4.501,466
Grok 4.5xAI$31,466
DeepSeek-V4-ProDeepSeek$1.981,465
Claude Sonnet 5Anthropic$41,461
GPT-6 SolOpenAI$41,456
Gemini 3.5 Flash-LiteGoogle$0.851,455
Grok 4.6xAI$31,454
GPT-5.6 LunaOpenAI$0.451,452
MiMo-V2.6-FlashXiaomi MiMo$0.181,451
GPT-6 LunaOpenAI$0.201,443
Grok 4.7xAI$31,443
Grok 4.3xAI$1.561,442
Mistral Large 4Mistral AI$2.061,429
GPT-4.1OpenAI$3.501,415
Solar Pro 4Upstage$0.521,386
GPT-4.1 miniOpenAI$0.701,383
GPT-4.1 nanoOpenAI$0.181,322

Cost

What each costs

Example workloads at each provider's listed rates, then every other rate either one lists. The cheaper figure in each row is highlighted.

The same work, priced

For 10M input and 2M output tokens, Claude Fable 5 costs 100 times as much as Claude Haiku 5.5, at each provider's listed rates.

What Claude Fable 5 and Claude Haiku 5.5cost for the same work, at each provider's listed rates.

  • 10M input and 2M output tokens

    Claude Fable 5 costs 100× as much

    Claude Fable 5
    $200
    Claude Haiku 5.5
    $2

  • The same, with 9M of the input tokens cached

    Claude Fable 5 costs 100× as much

    Claude Fable 5
    $119
    Claude Haiku 5.5
    $1.19
Workload or rateClaude Fable 5Claude Haiku 5.5
Example workloads
10M input and 2M output tokens$200$2 (better)
The same, with 9M of the input tokens cached$119$1.19 (better)
The same, through the batch APINot listed$1
Other listed rates
1M input tokens, cached$1$0.01 (better)
1M input tokens, 5-minute cache writeNot listed$0.125
1M input tokens, 1-hour cache writeNot listed$0.20
1M input tokens, batchNot listed$0.05
1M output tokens, batchNot listed$0.25
1M input tokens, prompts over 100K tokensNot listed$0.50
1M output tokens, prompts over 100K tokensNot listed$2.50

Verdict

When to choose each

Claude Fable 5

Where it leads

  • Higher FrontierMath Tiers 1-3 (v2) score, 87% vs 75.1%
  • Higher SimpleQA Verified score, 70.7% vs 23.8%

Best for

  • Long-horizon coding, reasoning, and knowledge-work evaluations

Watch out for

  • Fable requires 30-day data retention, and classifier-triggered requests fall back to Claude Opus 4.8
Full Claude Fable 5 profile

Claude Haiku 5.5

Where it leads

  • Lower input and output prices, $0.10 and $0.50 vs $10 and $50 per 1M tokens
  • Higher GPQA Diamond score, 89.6% vs 85.9%
  • Cheaper cached input, $0.01 vs $1 per 1M tokens
  • Batch pricing, $0.05 input and $0.25 output per 1M tokens

Best for

  • High-volume classification, extraction and routing under the 100,000-token line
  • Cost-sensitive fan-out steps where a frontier model is overkill

Watch out for

  • Priced by prompt length, and it is a cliff rather than a taper: a request whose prompt passes 100,000 tokens is billed at $0.50 input and $2.50 output for the whole request, five times the short rate
  • Cache reads and cache writes both count toward that 100,000-token measurement, so a large cached prefix can tip a request into the higher band on its own
  • It is the only current Claude model whose 1M window is not priced uniformly; every other 4.6-and-later model bills a 900k request at the same rate as a 9k one
Full Claude Haiku 5.5 profile

From benchmark to production

Building on Claude Fable 5 or Claude Haiku 5.5?

Public scores rarely hold on your own data. We test both models on your real tasks, then build the agent or pipeline around the one that wins.

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FAQ

Claude Fable 5 vs Claude Haiku 5.5 FAQ

Which is cheaper, Claude Fable 5 or Claude Haiku 5.5?

Claude Haiku 5.5 is 99% cheaper per 1M input tokens than Claude Fable 5, $0.10 vs $10. For 10M input and 2M output tokens, Claude Fable 5 costs $200 and Claude Haiku 5.5 $2 at standard rates.

Which is cheaper with prompt caching, Claude Fable 5 or Claude Haiku 5.5?

Claude Fable 5 charges $1 per 1M cached input tokens, 90% below its standard input rate, and Claude Haiku 5.5 $0.01, 90% below. With 9M of 10M input tokens cached and 2M output tokens, Claude Fable 5 costs $119 and Claude Haiku 5.5 $1.19.

Which scores higher on independent benchmarks, Claude Fable 5 or Claude Haiku 5.5?

Claude Haiku 5.5 leads on GPQA Diamond, 89.6% to 85.9%; Claude Fable 5 leads on FrontierMath Tiers 1-3 (v2), 87% to 75.1%; Claude Fable 5 leads on SimpleQA Verified, 70.7% to 23.8%. Scores are independent evaluations, not either vendor's launch figures.

Which has the larger context window, Claude Fable 5 or Claude Haiku 5.5?

Both accept 1,000,000 tokens of context. Both return up to 128,000 tokens per response.

Further reading

More on Claude Fable 5 and Claude Haiku 5.5

Articles on Claude Fable 5 and Claude Haiku 5.5

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Production evaluation

Choosing between Claude Fable 5 and Claude Haiku 5.5?

Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.

  • A head-to-head evaluation on your real workload
  • Routing between models by cost and difficulty
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