Claude Fable 5 vs Claude Opus 5
Claude Opus 5 and Claude Fable 5 are Anthropic's current premium decision pair. Anthropic recommends Opus 5 as the starting point for complex agentic coding and enterprise work, while it positions Fable 5 for workloads that need the highest available capability. Both have 1M-token context windows and 128K synchronous output, but Opus 5's standard Claude API price is $5/M input and $25/M output versus Fable 5 at $10/M and $50/M.
Choose Claude Opus 5 when you want the premium everyday route for complex coding, long-running agents, and enterprise analysis at half Fable 5's standard token price. Evaluate Claude Fable 5 when the highest available capability is worth the higher price and its access and safeguard profile fits the workload. Neither model is a universal winner: use setting-matched evaluations and test the provider route, latency, safety behavior, and task mix you actually plan to deploy.
Decision scorecard
Local evidence first| Signal | Claude Fable 5 | Claude Opus 5 |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | reasoning-heavy apps, multimodal apps, and tool-calling agents |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 1m | 1m |
| Cheapest output | $50/1M tokens | $25/1M tokens |
| Provider routes | 8 tracked | 7 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Claude Fable 5 has broader tracked provider coverage for fallback and route flexibility.
- Local decision data tags Claude Fable 5 for Coding, RAG, and Agents.
- Claude Opus 5 has the lower cheapest tracked output price at $25/1M tokens.
- Claude Opus 5 uniquely exposes Code execution and Computer use in local model data.
- Local decision data tags Claude Opus 5 for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Claude Fable 5
$20,500
Cheapest tracked route/tier: Anthropic
Claude Opus 5
$10,250
Cheapest tracked route/tier: Anthropic
Estimated monthly gap: $10,250. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on Anthropic, AWS Bedrock, and GCP Vertex AI; start route-level A/B tests there.
- Claude Opus 5 is $25/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Claude Opus 5 adds Code execution and Computer use in local capability data.
- Provider overlap exists on Anthropic, AWS Bedrock, and GCP Vertex AI; start route-level A/B tests there.
- Claude Fable 5 is $25/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Code execution and Computer use before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-06-09 | 2026-07-24 |
| Context window | 1m | 1m |
| Parameters | — | — |
| Architecture | Decoder Only | Decoder Only |
| License | Proprietary | Proprietary |
| Openness | Proprietary | Proprietary |
| Weights | Not released | Not released |
| Code | Unknown | Not released |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | - | 2026-05 |
Pricing and availability
| Pricing attribute | Claude Fable 5 | Claude Opus 5 |
|---|---|---|
| Input price | $10/1M tokens | $5/1M tokens |
| Output price | $50/1M tokens | $25/1M tokens |
| Providers |
Capabilities
| Capability | Claude Fable 5 | Claude Opus 5 |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | Yes | Yes |
| JSON / Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Code execution | No | Yes |
| IDE integration | No | No |
| Computer use | No | Yes |
| Parallel agents | No | No |
Benchmarks
No shared benchmark scores are currently available for this pair.
Continue comparing
Last reviewed: 2026-07-26. Data sourced from public model cards and provider documentation.