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Anthropic · Text model · GA
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Figures checked 1 Nov 2026. A dash means not published on the sources we checked, so it stays blank rather than estimated. AA index and speed are from Artificial Analysis at the xhigh with fallback setting.
Anthropic names these settings effort. Price per token is the same at every level. Higher effort uses more tokens, so a task costs more. platform.claude.com (opens in a new tab)
Our rule of thumb: Simple or speed-critical work: low. Standard work: the lab's default. Complex work: high. Use xhigh or max only when your own tests show a gain, as OpenAI and Anthropic both advise. developers.openai.com (opens in a new tab)platform.claude.com (opens in a new tab)
Artificial Analysis Intelligence Index at each setting it tested. Levels it has not tested are left out.
| Level | AA index | Tokens/s |
|---|---|---|
| low | 38 | 55 |
| medium | 43 | 55 |
| high | 47 | 57 |
| xhigh | 50 | 62 |
| max | 49 | 69 |
Output tokens a second measured by Artificial Analysis at each setting.
| Level | Tokens/s |
|---|---|
| low | 55 |
| medium | 55 |
| high | 57 |
| xhigh | 62 |
| max | 69 |
Highlighted point is Claude Fable 5.1. Grey points are the other 26 text models with both figures. Index at each model's best tested setting.
| Model | Index | Blended US$/1M |
|---|---|---|
| GPT-6 Astra | 57 | 20.000 |
| GPT-6.1 Sol | 55 | 4.000 |
| GPT-6.1 Terra | 51 | 2.000 |
| GPT-6 Luna | 28 | 0.200 |
| Claude Fable 5.1 | 50 | 20.000 |
| Claude Opus 5.5 | 58 | 8.000 |
| Claude Sonnet 5.5 | 54 | 4.000 |
| Claude Haiku 5.5 | 36 | 0.200 |
| Gemini 4 Carbon | 59 | 4.000 |
| Gemini 4 Argon | 50 | 4.000 |
| Gemini 3.8 Flash | 31 | 1.500 |
| Gemini 3.5 Flash-Lite | 12 | 0.850 |
| Grok 4.7 | 35 | 3.000 |
| Muse Wonder | 43 | 8.000 |
| Mistral Large 4 | 26 | 1.050 |
| Mistral Small 4 | 4 | 0.262 |
| DeepSeek V4.1 Flash 1017 | 32 | 0.525 |
| DeepSeek V4 Pro | 23 | 1.980 |
| Qwen3.8-Max | 34 | 3.000 |
| Kimi K3.1 Pro | 46 | 4.000 |
| GLM-5.3 | 32 | 2.150 |
| GLM-5.3-Flash | 28 | 0.237 |
| MiniMax M3.1 Flash | 29 | 0.262 |
| MiniMax M3 | 19 | 0.525 |
| MiMo-V2.6-Pro | 30 | 0.544 |
| MiMo-V2.6-Flash | 27 | 0.175 |
| Step 5 Preview | 29 | 1.425 |
US$ per 1M tokens, standard tier, short prompts. Output left blank where not published.
| Model | Input US$/1M | Output US$/1M |
|---|---|---|
| Claude Fable 5.1 | 10 | 50 |
| GPT-6 Astra | 10 | 50 |
| Gemini 4 Argon | 2 | 10 |
| Muse Wonder | 4 | 20 |
| Claude Opus 5.5 | 4 | 20 |
| Lab | Anthropic |
|---|---|
| Type | Text |
| Status | GA docs.anthropic.com (opens in a new tab) |
| Released | 1 Sep 2026 models.dev (opens in a new tab) |
| API access | Yes docs.anthropic.com (opens in a new tab) |
| API model ID | claude-fable-5-1 docs.anthropic.com (opens in a new tab) |
| API rate limits | – |
| Consumer app plans | Pro (usage credits), Max, Ultra claude.com (opens in a new tab)Pro pays with usage credits. Max and Ultra include it up to half the weekly limit |
| Price at each level | Same per-token price at every level. platform.claude.com (opens in a new tab) |
| Input per 1M tokens | US$10 docs.anthropic.com (opens in a new tab) |
| Output per 1M tokens | US$50 docs.anthropic.com (opens in a new tab) |
| Cached input | US$0.25 docs.anthropic.com (opens in a new tab) |
| Batch in / out | US$5 / US$25 docs.anthropic.com (opens in a new tab) |
| Other pricing | – |
| Context window | 1M tokens docs.anthropic.com (opens in a new tab) |
| Max output | 128K tokens docs.anthropic.com (opens in a new tab) |
| Input types | text, image, pdf docs.anthropic.com (opens in a new tab) |
| Output types | text |
| Weights | Closed docs.anthropic.com (opens in a new tab) |
| Reasoning | Yes docs.anthropic.com (opens in a new tab) |
| Tool use | Yes docs.anthropic.com (opens in a new tab) |
| Artificial Analysis index | 50 (xhigh with fallback) artificialanalysis.ai (opens in a new tab) |
| Output speed | 62 tokens/s artificialanalysis.ai (opens in a new tab) |
| Time to first token | 73.47 s artificialanalysis.ai (opens in a new tab) |
| Reasoning levels | low, medium, high (default), xhigh, max platform.claude.com (opens in a new tab) |
| Lab benchmark claims | – |
| Limitations |
|
Anthropic: MCP connector: remote MCP servers in the Messages API platform.claude.com (opens in a new tab). These official remote MCP servers fit that rule. We have not tested each server with this model. A server that publishes a client list is left out when this lab is not on it.
Same type, closest on quality index and blended price. A similarity, not a ranking.
Compare Claude Fable 5.1 with GPT-6 Astra and Gemini 4 Argon
All 109 AI models · AI agents · How we check sources
Anthropic 
Fortune reports $542–567bn of compute commitments and a plan, "Anthropic Direct", to lease dedicated data centres whose partners secure land, power and buildings.
Source: Fortune (opens in a new tab)
Anthropic
A research-preview app where Claude works as a proactive agent and checks with you before acting on your behalf.
Source: Claude on X (opens in a new tab)
Anthropic
Anthropic's fastest model costs $0.10/$0.50 per 1M tokens for prompts up to 100k. Anthropic says it costs around 75% less to run on average.
Source: Anthropic (opens in a new tab)
