Alternatives · 15 models compared · checked 10 Oct 2026
Claude Fable 5.1 alternatives: 15 models in or near grid G5
The closest model to Claude Fable 5.1 on the atlas is Claude Fable 5, in the same square, at $10.00 per 1M input tokens against Claude Fable 5.1’s . 12 of the 15 nearest models are cheaper on input; the cheapest is Gemini 2.5 Pro Preview 06-05 at $1.25. We rank by position on the atlas, not by capability, because we hold no capability data.
$10.00
observed We measured
- Source
- Our catalogue
- Retrieved
- 10 Oct 2026
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Cite this page
ModelsAtlas. “Claude Fable 5.1 alternatives: 15 models in or near grid G5”. Retrieved 10 Oct 2026. https://modelsatlas.com/models/anthropic/claude-fable-5-1/alternatives
Where the alternatives sit
Each square is a price band (A–H) × a context band (1–6). How the grid works
Same squareGRIDG51 modelClaude Fable 5
Claude Fable 5.1Its 15 nearest modelsOther modelsOpen weights
View the map as a table (5 squares)
| Square | Price band | Context band | Models |
|---|---|---|---|
| GRIDE5 | $1–3 | 1M | Gemini 2.5 Pro Preview 06-05, Grok 4.3, Muse Spark 1.1, Muse Spark 1.2 |
| GRIDF5 | $3–10 | 1M | Claude Sonnet 4.5, Claude Sonnet 4.6, Claude Opus 5.5, Qwen3.8 Max Prime, Claude Opus 4.6, Claude Opus 4.7, Claude Opus 4.8, Claude Opus 5 |
| GRIDG4 | $10–30 | 256K–1M | GPT-5 Image |
| GRIDG5 | $10–30 | 1M | Claude Fable 5.1, Claude Fable 5 |
| GRIDG6 | $10–30 | >1M | GPT-6 Astra |
Top 15 alternatives
Ranked by steps away on the atlas, then cheaper before pricier, then input price
| # | Model | Grid | Why it fits | Input / 1M | vs Claude Fable 5.1 | Output / 1M | Context | |
|---|---|---|---|---|---|---|---|---|
| — | Claude Fable 5.1Anthropic · the model you’re replacing | GRIDG5 | Baseline | $10.00 | — | $50.00 | 1M | |
| 1 | Claude Fable 5Anthropic | GRIDG5 | Same maker, same square, same input price | $10.00 | same | $50.00 | 1M | Compare → |
| 2 | Claude Sonnet 4.5Anthropic | GRIDF5 | Same maker, neighbouring square F5, 70% cheaper input | $3.00 | −70% | $15.00 | 1M | |
| 3 | Claude Sonnet 4.6Anthropic | GRIDF5 | Same maker, neighbouring square F5, 70% cheaper input | $3.00 | −70% | $15.00 | 1M | |
| 4 | Claude Opus 5.5Anthropic | GRIDF5 | Same maker, neighbouring square F5, 60% cheaper input | $4.00 | −60% | $20.00 | 1M | |
| 5 | Qwen3.8 Max PrimeQwen (Alibaba) | GRIDF5 | Neighbouring square F5, 60% cheaper input | $4.00 | −60% | $12.00 | 1M | |
| 6 | Claude Opus 4.6Anthropic | GRIDF5 | Same maker, neighbouring square F5, 50% cheaper input | $5.00 | −50% | $25.00 | 1M | Compare → |
| 7 | Claude Opus 4.7Anthropic | GRIDF5 | Same maker, neighbouring square F5, 50% cheaper input | $5.00 | −50% | $25.00 | 1M | Compare → |
| 8 | Claude Opus 4.8Anthropic | GRIDF5 | Same maker, neighbouring square F5, 50% cheaper input | $5.00 | −50% | $25.00 | 1M | Compare → |
| 9 | Claude Opus 5Anthropic | GRIDF5 | Same maker, neighbouring square F5, 50% cheaper input | $5.00 | −50% | $25.00 | 1M | |
| 10 | GPT-5 ImageOpenAI | GRIDG4 | Neighbouring square G4, same input price | $10.00 | same | $10.00 | 400K | Compare → |
| 11 | GPT-6 AstraOpenAI | GRIDG6 | Neighbouring square G6, same input price | $10.00 | same | $50.00 | 1.05M | Compare → |
| 12 | Gemini 2.5 Pro Preview 06-05Google | GRIDE5 | 2 squares away (E5), 88% cheaper input | $1.25 | −87% | $10.00 | 1.05M | |
| 13 | Grok 4.3xAI | GRIDE5 | 2 squares away (E5), 88% cheaper input | $1.25 | −87% | $2.50 | 1M | |
| 14 | Muse Spark 1.1Meta | GRIDE5 | 2 squares away (E5), 88% cheaper input | $1.25 | −87% | $4.25 | 1.05M | |
| 15 | Muse Spark 1.2Meta | GRIDE5 | 2 squares away (E5), 88% cheaper input | $1.25 | −87% | $4.25 | 1.05M |
What switching saves
3,000 input + 800 output tokens × 1,000 requests a day
Σ Derived from standard-tier prices; excludes caching and batch discounts. Use your own numbers →
Larger-context alternatives
| Model | Input / 1M | Context | |
|---|---|---|---|
| GPT-6 AstraOpenAI | $10.00 | 1.05M | Compare |
| Gemini 2.5 Pro Preview 06-05Google | $1.25 | 1.05M | |
| Muse Spark 1.1Meta | $1.25 | 1.05M | |
| Muse Spark 1.2Meta | $1.25 | 1.05M | |
| Muse Spark 1.3Meta | $1.25 | 1.05M |
Free alternatives
| Model | Input / 1M | Context | |
|---|---|---|---|
| Lyria 3 Clip PreviewGoogle | Free | 1.05M | |
| Lyria 3 Pro PreviewGoogle | Free | 1.05M |
Compare Claude Fable 5.1 head to head
Questions
What is the best alternative to Claude Fable 5.1?
Claude Fable 5 ranks first: same maker, same square, same input price. Input is $10.00 per 1M tokens against $10.00 for Claude Fable 5.1. Ranking is by position on the atlas, not by quality.
What is the cheapest alternative to Claude Fable 5.1?
Gemini 2.5 Pro Preview 06-05 at $1.25 per 1M input tokens, 88% less than Claude Fable 5.1, among the 15 closest.
Is there an open-weight alternative to Claude Fable 5.1?
None of the 15 closest is marked open-weight in our records.
Which alternative has a larger context window?
GPT-6 Astra, Gemini 2.5 Pro Preview 06-05, Muse Spark 1.1 and Muse Spark 1.2 hold more than Claude Fable 5.1's 1M; the largest is GPT-6 Astra at 1.05M.
How are alternatives ranked?
By distance on the atlas grid from Claude Fable 5.1's square G5: the same square first, then neighbouring squares. Within the same distance, cheaper models come before pricier ones, then the lowest input price wins. We hold no capability data, so we do not claim a model can do what Claude Fable 5.1 does, only that it costs and holds about the same. No vendor pays for position.
More alternatives
Keep going in your AI
Opens with this page as the source. We add nothing else to the prompt.
- What is the best alternative to Claude Fable 5.1?
- What is the cheapest alternative to Claude Fable 5.1?
- Is there an open-weight alternative to Claude Fable 5.1?