Claude Fable 5.1 vs Gemini 3.5 Flash Lite
At a Glance
| Compare | Claude Fable 5.1Anthropic |  Gemini 3.5 Flash LiteGoogle DeepMind |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | #1 of 4699.0 score · 3/3 sources · complete | #39 of 4617.6 score · 3/3 sources · complete |
| CostLower is better · Published-token output estimate | #43 of 44$0.824 per LiveBench case | #8 of 44$0.029 per LiveBench case |
| EfficiencyHigher is better · MM Efficiency v1.5 | #22 of 3851.7 score · 3/3 sources · complete | #32 of 3846.2 score · 3/3 sources · complete |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $10.00Anthropic ↗ · Sep 3, 2026 | $0.30Google AI ↗ · Aug 29, 2026 |
| Output priceFrom · USD / 1M tokens | $50.00Anthropic ↗ · Sep 3, 2026 | $2.50Google AI ↗ · Aug 29, 2026 |
| Context windowMaximum documented tokens | 1,000K | 1,049K |
| Model facts checked | Sep 2, 2026View model evidence → | Aug 29, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
| Benchmark | Claude Fable 5.1 | Gemini 3.5 Flash-Lite |
|---|---|---|
| ARC-AGI-1verified-v1-ba05d69f6453 · verified_score · leader | 97.50100% of row best · percent · Claude Fable 5.1 (Max) | 53.5055% of row best · percent · Gemini 3.5 Flash-Lite (High) |
| ARC-AGI-2verified-v2-6c676fa3e9af · verified_score · leader | 90.00100% of row best · percent · Claude Fable 5.1 (XHigh) | 10.2811% of row best · percent · Gemini 3.5 Flash-Lite (High) |
| LMArena Agent Arenaagent-2026-09-15-d25aabda0010 · outcome_score · leader | 13.71100% of row best · score · Claude Fable 5.1 (Max); 95% CI [11.98654915, 15.42403622]; sessions 13320; observations 1453463; rank 1 | -15.3574% of row best · score · Gemini 3.5 Flash Lite; 95% CI [-16.65525683, -14.04242266]; sessions 23248; observations 670178; rank 45 |
| LMArena Text Arenatext-2026-09-13-d25aabda0010 · arena_rating · leader | 1,507.58100% of row best · rating · claude-fable-5.1-max; 95% CI [1499.42882565, 1515.73467375]; votes 5783; rank 1 | 1,435.5495% of row best · rating · gemini-3.5-flash-lite; 95% CI [1430.59505493, 1440.49024696]; votes 26165; rank 79 |
| LMArena Vision Arenavision-2026-09-13-d25aabda0010 · arena_rating · leader | 1,322.34100% of row best · rating · claude-fable-5.1-max; 95% CI [1310.08723910, 1334.59344910]; votes 2701; rank 2 | 1,268.4296% of row best · rating · gemini-3.5-flash-lite; 95% CI [1258.88097193, 1277.96729164]; votes 5254; rank 37 |
| LiveBench2026-06-25 · overall · leader | 86.82100% of row best · percent · claude-fable-5-1-max-effort · 16,470 output tokens / case | 66.3576% of row best · percent · gemini-3.5-flash-lite-high · 11,526 output tokens / case |
| ToneBench2026-09-11-10-task-4ef099199c9c · overall_score · unverified | 89.71100% of row best · points · Claude Fable 5.1 (max effort) · 60,786 output tokens / case | 73.4282% of row best · points · Gemini 3.5 Flash-Lite · 1,966 output tokens / case |
| Overall ResultCounted from the protocol-matched rows above | 6 benchmark winsOverall lead | 0 benchmark wins |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Side-by-Side Facts
| Field | Claude Fable 5.1 | Gemini 3.5 Flash-Lite |
|---|---|---|
| Developer | Anthropic | Google DeepMind |
| Family | Claude 5 1 | Gemini 3 |
| Model | Claude Fable 5.1 | Gemini 3.5 Flash-Lite |
| Version | Claude Fable 5.1 | Gemini 3.5 Flash-Lite |
| Lifecycle | active | active |
| Released | 2026-09-01 | Unknown |
| Knowledge cutoff | 2026-06-01 | Unknown |
| Input modalities | Text, Image | Text, Image, Video, Audio, Document |
| Output modalities | Text | Text |
| Context window | 1,000K | 1,049K |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | No | No |
| Provider access | Anthropic (Standard) | Google AI (Standard), Google Gemini (Standard) |
| Capabilities | chat, generation, reasoning, tools | chat, generation, reasoning, tools |
Claude Fable 5.1 Capabilities
Gemini 3.5 Flash Lite Capabilities
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Primary Evidence
Sources and Freshness
Questions
Claude Fable 5.1 vs Gemini 3.5 Flash Lite FAQs
Is Claude Fable 5.1 or Gemini 3.5 Flash Lite better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Fable 5.1 and Gemini 3.5 Flash Lite, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Fable 5.1 or Gemini 3.5 Flash Lite?+
Claude Fable 5.1 is $10.00 and Gemini 3.5 Flash Lite is $0.30 per million tokens, so Gemini 3.5 Flash Lite is cheaper on this metric. Claude Fable 5.1 is $50.00 and Gemini 3.5 Flash Lite is $2.50 per million tokens, so Gemini 3.5 Flash Lite is cheaper on this metric.
Which has a larger context window, Claude Fable 5.1 or Gemini 3.5 Flash Lite?+
Gemini 3.5 Flash Lite has the larger sourced context window. Claude Fable 5.1 supports 1,000K and Gemini 3.5 Flash Lite supports 1,049K.
Which performs better in benchmarks, Claude Fable 5.1 or Gemini 3.5 Flash Lite?+
Claude Fable 5.1 leads the current overall benchmark count. The result uses 6 protocol-matched benchmarks from 3 publishers; it is not a universal quality score.
Can Claude Fable 5.1 or Gemini 3.5 Flash Lite be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. Claude Fable 5.1 is not marked open weight; Gemini 3.5 Flash Lite is not marked open weight.
Can Claude Fable 5.1 and Gemini 3.5 Flash Lite understand images?+
Claude Fable 5.1 is documented with image input; Gemini 3.5 Flash Lite is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Claude Fable 5.1 or Gemini 3.5 Flash Lite?+
Claude Fable 5.1 has the larger sourced maximum output: Claude Fable 5.1 supports 128K and Gemini 3.5 Flash Lite supports 66K output tokens.
Do Claude Fable 5.1 and Gemini 3.5 Flash Lite support reasoning and tool use?+
Claude Fable 5.1: reasoning, tool calling, and image input. Gemini 3.5 Flash Lite: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Fable 5.1 or Gemini 3.5 Flash Lite?+
Claude Fable 5.1 has 1 sourced provider route; Gemini 3.5 Flash Lite has 2, so Gemini 3.5 Flash Lite has broader tracked availability.
Which offers better value, Claude Fable 5.1 or Gemini 3.5 Flash Lite?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.