Models / Claude Fable 5 1ID: anthropic/claude-fable-5-1
chat model by Anthropic

Claude Fable 5 1

Claude Fable 5 1 is a chat model made by Anthropic, served on nRouter. It has a 1M-token context window.

PlaygroundQuick Start
Context window1M
Max output128K
Maker

Anthropic

Served On

Anthropic

Specifications

Context window, ranked against other chat models

Proportional scale: 0 to 1M tokens. Not ranked, no published context window: glm-5.3-prime, qwen3-235b-a22b-2507, qwen3.7-max-2026-05-17, claude-opus-5-5.

Context window

1.0M

tokens
Max output

128K

tokens
Modality

chat

Vision
Function calling
System prompt

Benchmarks & Performance Rankings

Empirical intelligence benchmarks and category leaderboard placements for Claude Fable 5 1.

Compare in BenchmarksLeaderboard
Leaderboard Placements
#3
overallScore: 99.4%
#1
agentScore: 99.8%
#4
textScore: 98.9%
#2
webdevScore: 99.5%
Core Benchmark DimensionsSource: Anthropic Evaluation & LMSYS
MMLUKnowledge

93.8%

HumanEvalCoding

96.2%

Latency p50TTFT

550ms

p99: 1520ms

ThroughputStream

68tok/s

SWE-bench: 65.5%

Recommended by nRouter Smart Routing: Complex agentic loops, long-horizon tool orchestration, and autonomous operations. Key operational strength: Leading orchestrator agent with unmatched net improvement (14.31%) and multi-turn recovery.

Pricing

Rates are read live

Pricing for claude-fable-5-1 is fetched from the live catalogue on load, so it is never served from a cache that could outlive a repricing.

Provider-Reported Capabilities

What the hosting provider reports for this model, shown as it was returned. nRouter adds nothing to this report and infers nothing that is missing from it.

Batch batch
Effort effort
Low low
Max max
High high
Xhigh xhigh
Medium medium
Thinking thinking
Types types
Enabled enabled
Adaptive adaptive
Disabled disabled
Citations citations
PDF input pdf_input
Image input image_input
Code execution code_execution
Context management context_management
Compact (2026-01-12) compact_20260112
Clear thinking (2025-10-15) clear_thinking_20251015
Clear tool uses (2025-09-19) clear_tool_uses_20250919
Structured outputs structured_outputs

Availability

Not enough data yet

We have not collected enough health probes for this model to publish an uptime or latency figure. A percentage from a handful of samples is fabricated precision, so none is shown until the sample count supports one.

How Claude Fable 5 1 is billed

Billed at the provider's list price, with no per-token markup.

Exact list price
Tokens settle at the published rate of the model that served your call.
Cache discounts passed through
Provider prompt-caching discounts reach your balance with no added fee.
Cost on every response
Each response carries the x-nr-request-cost header, so you can reconcile spend per request.

More from Anthropic

claude-opus-5-5claude-3-opus-20240229-v1claude-3-7-sonnet-20250219claude-opus-4-5-20251101

Start building with claude-fable-5-1

One API key, three steps. Choose your tool to begin.

  1. Get a key

    Create API key

  2. Set your API key

    export NROUTER_API_KEY="<YOUR_API_KEY>"

  3. Configure Claude Code

    Choose a tool, then copy its setup from the panel.

npm install -g @anthropic-ai/claude-code
Claude Code · anthropic/claude-fable-5-1
# Point Claude Code to nRouter gateway
export ANTHROPIC_BASE_URL="https://api.nrouter.ai"
export ANTHROPIC_API_KEY="$NROUTER_API_KEY"

# Launch with anthropic/claude-fable-5-1
claude --model anthropic/claude-fable-5-1