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Claude Fable 5 vs Gemini 3 Flash

Claude Fable 5 leads the LLM Stats Score 54.9 to 37.0. Gemini 3 Flash is 17.8x cheaper per token.

Anthropic · Google · Updated for 2026

Which is better?

Claude Fable 5 leads the overall LLM Stats Score 54.9 to 37.0, ranking #6 overall.

In the 5 individual benchmarks reported for both models, Claude Fable 5 wins 5; this is a narrower head-to-head signal than the composite indexes.

On price, Gemini 3 Flash is roughly 17.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Fable 5

  • overall performance matters — it scores 54.9 and ranks #6 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 5 of 5 exact shared results
  • you want the most recent training data — it shipped Jun 2026

Choose Gemini 3 Flash

  • cost matters — it's about 17.8x cheaper per token

At a glance

The differences that matter most.

Claude Fable 5
Anthropic
Gemini 3 Flash
Google
Core performance indexes
LLM Stats Score
54.9
#6
37.0
#67
Reasoning
52.4
#8
37.8
#61
Coding
46.4
#2
22.1
#77
Agents
40.8
#3
17.8
#66
Cost, coverage & limits
Benchmark wins
5 of 5
0 of 5
Input price
$10.00 / M
$0.50 / M
Output price
$50.00 / M
$3.00 / M
Context window
1,000,000
1,000,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

4 shared
Index
Claude Fable 5
Gemini 3 Flash
Math
41.3#8
36.8#33
Vision
36.1#8
24.9#45
Tool use
27.0#22
16.1#82
Multimodal
31.5#22
26.3#39
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

19 reported for Claude Fable 5 · 24 for Gemini 3 Flash

5 shared

Claude Fable 5 outperforms in 5 benchmarks (Finance Agent v2, Humanity's Last Exam, Legal Agent Benchmark, LiveBench, SWE-Bench Verified), while Gemini 3 Flash is better at 0 benchmarks.

Claude Fable 5 significantly outperforms across most benchmarks.

Thu Sep 03 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Gemini 3 Flash costs less

For input processing, Claude Fable 5 ($10.00/1M tokens) is 20.0x more expensive than Gemini 3 Flash ($0.50/1M tokens).

For output processing, Claude Fable 5 ($50.00/1M tokens) is 16.7x more expensive than Gemini 3 Flash ($3.00/1M tokens).

In conclusion, Claude Fable 5 is more expensive than Gemini 3 Flash.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Thu Sep 03 2026 • llm-stats.com
Anthropic
Claude Fable 5
Input tokens$10.00
Output tokens$50.00
Best providerAnthropic
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
Best providerGoogle
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Both models have the same input context window of 1,000,000 tokens. Claude Fable 5 can generate longer responses up to 128,000 tokens, while Gemini 3 Flash is limited to 65,536 tokens.

Anthropic
Claude Fable 5
Input1,000,000 tokens
Output128,000 tokens
Google
Gemini 3 Flash
Input1,000,000 tokens
Output65,536 tokens
Thu Sep 03 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Fable 5 and Gemini 3 Flash support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude Fable 5

Text
Images
Audio
Video

Gemini 3 Flash

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude Fable 5

Proprietary

Closed source

Gemini 3 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Fable 5 was released on 2026-06-09, while Gemini 3 Flash was released on 2025-12-17.

Claude Fable 5 is 6 months newer than Gemini 3 Flash.

Claude Fable 5

Jun 9, 2026

2 months ago

5mo newer
Gemini 3 Flash

Dec 17, 2025

8 months ago

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a documented knowledge cutoff of 2025-01-31, while Claude Fable 5's cutoff date is not specified.

We can confirm Gemini 3 Flash's training data extends to 2025-01-31, but cannot make a direct comparison without Claude Fable 5's cutoff date.

Claude Fable 5

—

Gemini 3 Flash

Jan 2025

Provider Availability

Claude Fable 5 is available from Anthropic. Gemini 3 Flash is available from Google.

Claude Fable 5

anthropic logo
Anthropic
Input Price:Input: $10.00/1MOutput Price:Output: $50.00/1M

Gemini 3 Flash

google logo
Google
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Fable 5 and Gemini 3 Flash side-by-side, then vote on the output you prefer.

Claude Fable 5
✓ Preferred
Gemini 3 Flash
Open in Playground

FAQ

Common questions about Claude Fable 5 vs Gemini 3 Flash.

Which is better, Claude Fable 5 or Gemini 3 Flash?

Claude Fable 5 leads the LLM Stats Score 54.9 to 37.0. Claude Fable 5 is made by Anthropic and Gemini 3 Flash is made by Google. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Fable 5 compare to Gemini 3 Flash in benchmarks?

Claude Fable 5 scores SWE-Bench Verified: 95.0%, FrontierSWE: 90.0%, OSWorld-Verified: 85.0%, Terminal-Bench 2.1: 84.3%, SWE-Bench Pro: 80.0%. Gemini 3 Flash scores Vending-Bench 2: 100.0%, AIME 2025: 99.7%, Global PIQA: 92.8%, MMMLU: 91.8%, GPQA: 90.4%.

Is Claude Fable 5 cheaper than Gemini 3 Flash?

Gemini 3 Flash is 20.0x cheaper for input tokens. Claude Fable 5 costs $10.00/M input and $50.00/M output via anthropic. Gemini 3 Flash costs $0.50/M input and $3.00/M output via google.

What are the context window sizes for Claude Fable 5 and Gemini 3 Flash?

Claude Fable 5 supports 1.0M tokens and Gemini 3 Flash supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Fable 5 and Gemini 3 Flash?

Key differences include LLM Stats Score (54.9 vs 37.0), input pricing ($10.00 vs $0.50/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Fable 5 and Gemini 3 Flash?

Claude Fable 5 is developed by Anthropic and Gemini 3 Flash is developed by Google.

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