$ diff claude-fable-5-1 deepseek-v4-pro-0813
Claude Fable 5.1 vs DeepSeek V4-Pro-0813
Values come from Claude Fable 5.1 and DeepSeek V4-Pro-0813, where each is cited to its source. This page states no benchmark result and ranks neither model — it puts two published specifications next to each other. Where a lab has not published a figure, the row says so rather than guessing.
AnthropicClaude Fable 5.1
- context
- 1M
- weights
- closed
- $/M in
- $10
- $/M out
- $50
- context
- 1.0M
- weights
- open
- $/M in
- $0.66
- $/M out
- $1.98
What actually differs
- Context window
- DeepSeek V4-Pro-0813 takes 1.0M against 1M — modestly more room in a single request.
- Input price
- DeepSeek V4-Pro-0813 at $0.66/M against $10/M — 15.2× cheaper to feed.
- Output price
- DeepSeek V4-Pro-0813 at $1.98/M against $50/M — 25.3× cheaper to generate. Output dominates the bill on most agentic workloads, where the model writes far more than it reads.
- Weights
- DeepSeek V4-Pro-0813 publishes weights (MIT (open-weight, as reported)); Claude Fable 5.1 is API-only. That decides self-hosting, air-gapped deployment and fine-tuning before any capability question does.
- Recency
- Claude Fable 5.1 shipped 19 days after DeepSeek V4-Pro-0813 (2026-09-01 vs 2026-08-13).
Full spec
| Attribute | Claude Fable 5.1 | DeepSeek V4-Pro-0813 |
|---|---|---|
| Developer | Anthropic | DeepSeek |
| Released | 2026-09-01 | 2026-08-13 |
| Context window | 1M tokens | 1,048,576 (1M) — 384K max output |
| Pricing | $10/M input · $50/M output · cache reads $0.25/M | $0.66/M input (cache miss) · $1.98/M output off-peak; $1.32 · $3.96 at peak — see Pricing |
| License | proprietary (API-only; no weight release) | MIT (open-weight, as reported) |
| Availability | Claude API as `claude-fable-5-1`; plan-tier access is disputed — see `## Conflicting Reports` | DeepSeek API (Responses format, Codex-adapted), Hugging Face (`deepseek-ai/DeepSeek-V4-Pro-0813`) |