Choose Claude Opus 5 When
- $5 input and $25 output per million tokens, versus $10 and $50 for Claude Fable 5
- A 60.7 Intelligence Index and 78.0 Coding Index, versus 59.9 and 62.0
- A 93.2 GPQA score and 89.1 Terminal-Bench 2.1 score
Claude Opus 5 vs Claude Fable 5
Claude Opus 5 from Anthropic and Claude Fable 5 from Anthropic are shown side by side so you can compare pricing, model IDs, context and output limits, modalities, tool use, release details, and benchmark results where data is available.
Overall Recommendation
Claude Opus 5 is the stronger default in TokenHub data: it costs 50% less per token while posting a 60.7 Intelligence Index and 78.0 Coding Index versus 59.9 and 62.0 for Claude Fable 5. Choose Fable 5 when its Mythos-level positioning, memory-oriented long-running work, and slightly higher HLE score matter more.
Comparison Highlights
Claude Opus 5Anthropic
Claude Fable 5Anthropic
Best For
Frontier codingdemanding reasoningcost-efficient flagship production
Ambitious long-running projectsautonomous knowledge worksubagent collaboration
How To Read ItUse-case synthesis from model capabilities and positioning.
Workload Fit
CodingReasoningValue
Long projectsKnowledge workSubagents
How To Read ItThe workloads each model is most directly shaped for.
Input
$5/MEdge
$10/M
How To Read ItLower is better when prompts or retrieval payloads are large.
Output
$25/MEdge
$50/M
How To Read ItLower is better for reasoning-heavy or long-generation traffic.
Context length
1M
1M
How To Read ItHigher is better for repositories, retrieval packs, and transcripts.
Input modalities
Text, Image, PDF
Text, Image, PDF
How To Read ItBroader input support reduces the need for separate vision or video models.
Model Selection Guide
Choose Claude Fable 5 When
- A 53.3 HLE score, slightly above Claude Opus 5 at 52.6
- Mythos-level positioning for long-running autonomy, memory, and subagent work
- A 98.5 τ²-Bench score for realistic agent workflows
Basic Information
Claude Opus 5Anthropic
Claude Fable 5Anthropic
Name
Claude Opus 5Claude Opus 5
Model id
Claude Opus 5claude-opus-5
Data source
Claude Opus 5TokenHub production catalog
Intro
Claude Opus 5Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis of charts and documents, complex office deliverables, and coordinating parallel subagents.
The model maintains strong instruction following and tool use across extended tasks, while remaining effective at lower effort settings for workloads that prioritize latency and token efficiency.
Author
Claude Opus 5Anthropic
Released date
Claude Opus 52026-07-24
Context length
Claude Opus 51M
Max output tokens
Claude Opus 5128K
Name
Claude Fable 5Claude Fable 5
Model id
Claude Fable 5claude-fable-5
Data source
Claude Fable 5TokenHub production catalog
Intro
Claude Fable 5Claude Fable 5 is presented as a Mythos-level Claude model for ambitious, long-running projects. Source pages emphasize autonomous knowledge work, software engineering, vision, memory, and the ability to work for extended periods with sub-agents. Its description should feel more like a project-level collaborator than a short-turn assistant.
Author
Claude Fable 5Anthropic
Released date
Claude Fable 52026-06-09
Context length
Claude Fable 51M
Max output tokens
Claude Fable 5128K
Name
Claude Opus 5Claude Opus 5
Name
Claude Fable 5Claude Fable 5
Model id
Claude Opus 5claude-opus-5
Model id
Claude Fable 5claude-fable-5
Data source
Claude Opus 5TokenHub production catalog
Data source
Claude Fable 5TokenHub production catalog
Intro
Claude Opus 5Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis of charts and documents, complex office deliverables, and coordinating parallel subagents.
The model maintains strong instruction following and tool use across extended tasks, while remaining effective at lower effort settings for workloads that prioritize latency and token efficiency.
Intro
Claude Fable 5Claude Fable 5 is presented as a Mythos-level Claude model for ambitious, long-running projects. Source pages emphasize autonomous knowledge work, software engineering, vision, memory, and the ability to work for extended periods with sub-agents. Its description should feel more like a project-level collaborator than a short-turn assistant.
Author
Claude Opus 5Anthropic
Author
Claude Fable 5Anthropic
Released date
Claude Opus 52026-07-24
Released date
Claude Fable 52026-06-09
Context length
Claude Opus 51M
Context length
Claude Fable 51M
Max output tokens
Claude Opus 5128K
Max output tokens
Claude Fable 5128K
Pricing
Claude Opus 5Anthropic
Claude Fable 5Anthropic
Input
Claude Opus 5$5/M
Output
Claude Opus 5$25/M
Cached input
Claude Opus 5$0.5/M
Input
Claude Fable 5$10/M
Output
Claude Fable 5$50/M
Cached input
Claude Fable 5$1/M
Input
Claude Opus 5$5/M
Input
Claude Fable 5$10/M
Output
Claude Opus 5$25/M
Output
Claude Fable 5$50/M
Cached input
Claude Opus 5$0.5/M
Cached input
Claude Fable 5$1/M
Capabilities
Claude Opus 5Anthropic
Claude Fable 5Anthropic
Reasoning
Claude Opus 5
Knowledge
Claude Opus 52026-05-01
Attachment
Claude Opus 5
Input modalities
Claude Opus 5Text, Image, PDF
Output modalities
Claude Opus 5Text
Temperature
Claude Opus 5
Tool use
Claude Opus 5
Reasoning
Claude Fable 5
Knowledge
Claude Fable 52026-01-31
Attachment
Claude Fable 5
Input modalities
Claude Fable 5Text, Image, PDF
Output modalities
Claude Fable 5Text
Temperature
Claude Fable 5
Tool use
Claude Fable 5
Reasoning
Claude Opus 5
Reasoning
Claude Fable 5
Knowledge
Claude Opus 52026-05-01
Knowledge
Claude Fable 52026-01-31
Attachment
Claude Opus 5
Attachment
Claude Fable 5
Input modalities
Claude Opus 5Text, Image, PDF
Input modalities
Claude Fable 5Text, Image, PDF
Output modalities
Claude Opus 5Text
Output modalities
Claude Fable 5Text
Temperature
Claude Opus 5
Temperature
Claude Fable 5
Tool use
Claude Opus 5
Tool use
Claude Fable 5
Benchmark
Claude Opus 5Anthropic
Claude Fable 5Anthropic
Intelligence
wins60.7
Coding
wins78
Intelligence
59.9
Coding
62
Knowledge & Reasoning
GPQA
wins93.2%
HLE
52.6%
GPQA
92.6%
HLE
wins53.3%
Coding
SciCode
55.7%
Terminal-Bench Hard
n/a
SciCode
wins60.2%
Terminal-Bench Hard
wins62.9%
Instruction Following & Agent Tasks
IFBench
n/a
AA-LCR
70%
Tau2
n/a
IFBench
wins63.5%
AA-LCR
70%
Tau2
wins98.5%
FAQ
Which model is better, Claude Opus 5 or Claude Fable 5?
+
Neither model is universally better. Start with the Model Selection Guide above to match each model to your task, then use pricing, context length, maximum output, and capability rows to confirm the operational fit.
Is Claude Fable 5 cheaper than Claude Opus 5?
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Use the pricing rows above to compare input, output, and cached input prices for Claude Opus 5 and Claude Fable 5.
Which model supports a longer context length?
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Claude Opus 5 lists 1M context length, while Claude Fable 5 lists 1M.
Can I access both models through TokenHub?
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If both models are available in the TokenHub catalog, you can route requests to Claude Opus 5 and Claude Fable 5 through the TokenHub API.