Claude Fable 5
Anthropic's most capable widely released model for demanding reasoning, autonomous knowledge work, coding, vision, and long-horizon agents.
Overview
Recommended use cases and a precise technical profile, generated from the same reviewed model record used throughout this page.
Ambiguous, multistep work that can take hours or days, with persistent focus and self-correction.
Codebase-wide migrations, complex debugging, production implementation, and sophisticated multi-agent workflows.
High-stakes research, financial analysis, scientific reasoning, visual inspection, and enterprise deliverables.
| Model ID | claude-fable-5 | Provider | Anthropic |
| Protocol | ANTHROPIC compatible | DIT availability | 5 active routes |
| Input | Text, Image, File | Output | Text |
| Context window | 1,000,000 tokens | Maximum output | 128,000 tokens |
| Released | Jun 9, 2026 | Knowledge cutoff | Not published |
| Endpoint | Path | Status |
|---|---|---|
| Messages | /v1/messages | Supported |
| Message Batches | /v1/messages/batches | Supported |
Providers
Compare DIT market routing with the official upstream reference across price, speed, and availability. Supplier identities remain private.
| Provider | Input /M | Output /M | Cache read /M | Latency | Throughput | Uptime |
|---|---|---|---|---|---|---|
DIT Market 40% off Aggregated supply · 5 active routes | 3523.4 msP50 TTFT | 47.6 tpsP50 output | 80.54%30-day success | |||
Anthropic official Reference Direct upstream · reviewed list price | $10 | $50 | $1 | —Not published | —Not published | OperationalChecked Aug 31, 2026 |
Prices are USD per 1M tokens. DIT performance and uptime appear only after 50 eligible requests; supplier identities and customer traffic remain private.
Pricing
Compare DIT market rates directly with reviewed official prices so savings remain visible and auditable.
| Usage | Official | DIT market | Saving | Billing basis |
|---|---|---|---|---|
| Input tokens | $10 | $6 | ~40% | Per 1M tokens |
| Output tokens | $50 | $30 | ~40% | Per 1M tokens |
| Cached input | $1 | $0.6 | ~40% | Per 1M cached tokens |
Performance
Latency, throughput, activity, and request success use privacy-safe DIT runtime aggregates only when the eligibility threshold is met.
| Metric | P50 | P95 | Reading |
|---|---|---|---|
| Time to first byte | 3523.4 ms | 14554.7 ms | Lower is better |
| End-to-end latency | 5907.5 ms | — | Lower is better |
| Output throughput | 47.6 tps | — | Higher is better |
Uptime
A concise service-health view with scope and source stated next to the number.
Benchmarks
Reviewed evaluation results with configuration notes and source links kept alongside every score.
Quick Start
A copy-ready request for the compatible DIT endpoint using this model's reviewed identifier.
curl https://api.dit.ai/v1/messages \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-fable-5",
"max_tokens": 256,
"messages": [{"role":"user","content":"Explain dynamic model routing."}]
}'Sources
Field-level provenance keeps pricing, limits, capabilities, and benchmarks independently reviewable.
| Source | Type | Covers | Checked |
|---|---|---|---|
| Anthropic models overview ↗ | Official | Pricing, Context, Modalities, Maximum output, Reasoning effort | Aug 31, 2026 |
| Introducing Claude Fable 5 and Claude Mythos 5 ↗ | Official | Technical profile, Capabilities, Endpoint, Official tool support, Not supported, Usage rules | Aug 31, 2026 |
| Claude Fable 5 and Claude Mythos 5 launch ↗ | Official | Released, Technical profile, Benchmarks | Aug 31, 2026 |
| OpenRouter Claude Fable 5 ↗ | OpenRouter | Benchmarks | Aug 31, 2026 |
Official sources take priority. Third-party metadata is retained only when its field and review date are shown.
Models like Claude Fable 5
Reviewed models ranked by capability overlap, protocol compatibility, and context similarity.
Frequently asked questions
Answers use the same reviewed facts and pricing fields presented in the tables above.
What is Claude Fable 5?+
Anthropic's most capable widely released model for demanding reasoning, autonomous knowledge work, coding, vision, and long-horizon agents.
How much does Claude Fable 5 cost?+
The reviewed official rate is $10 per 1M input tokens and $50 per 1M output tokens. DIT pricing is shown only when a live DIT route exists.
What is the context length of Claude Fable 5?+
Claude Fable 5 supports a reviewed context window of 1,000,000 tokens and up to 128,000 output tokens.
What capabilities does Claude Fable 5 support?+
Reviewed capabilities include Always-on adaptive thinking, Tool calling, Structured outputs, Vision, Long context. Consult the linked official documentation for endpoint-specific limits.
What inputs and outputs does Claude Fable 5 support?+
Reviewed input modalities: Text, Image, File. Reviewed output modalities: Text.
Which API endpoints and reasoning levels does Claude Fable 5 support?+
Claude Fable 5 is documented for Messages, Message Batches. Reasoning effort can be set to low, medium, high, xhigh, max, with high as the documented default.
Is Claude Fable 5 available on DIT?+
Claude Fable 5 currently has 5 active routes. DIT selects eligible supply by price and health, with automatic failover when another route is available.
When was Claude Fable 5 released?+
Claude Fable 5 was released on Jun 9, 2026.