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Ongoing case: Anthropic's Claude models New model · 24 stories
Claude Fable 5.2 costs $8 per million input tokens; Mythos 5.2 is vetted-only
Both cost $8 per million input and $40 per million output tokens, Anthropic's 9 November launch post says; Fable 5.2 is on AWS, Google Cloud and Azure.
Check our sources · 12 facts from 2 sources
Image: Anthropic
Key points
- Anthropic's launch post says Claude Fable 5.2 and Claude Mythos 5.2 cost $8 per million input tokens and $40 per million output tokens, which it calls a lower price.
- Anthropic says output is up to 30% faster than the 5.1 versions; fast mode, up to 2.5 times faster, costs $16 per million input and $80 per million output tokens.
- The system card says Mythos 5.2 has more permissive safeguards in biology and cybersecurity and is limited to vetted individuals and organisations; Fable 5.2 has extra safeguards there.
What happened
Claude Fable 5.2 costs $8 per million input tokens and $40 per million output tokens, a lower price than Fable 5.1, and Anthropic says it generates output up to 30% faster than the 5.1 models. The figures are from Anthropic's launch post of 9 November 2026, which covers Fable 5.2 and Claude Mythos 5.2.
Anthropic's system card describes them as two configurations of one new model. Fable 5.2 is for general use and carries extra safeguards in biology and cybersecurity; Mythos 5.2 has more permissive safeguards in those domains and is limited to vetted individuals and organisations.
An optional fast mode speeds up token generation by up to 2.5 times, at $16 per million input tokens and $80 per million output tokens. The launch post says Fable 5.2 is available on all platforms, including Amazon Web Services, Google Cloud and Microsoft Azure, and gives claude-fable-5-2 as the model name on the Claude Platform.
Anthropic says that in its early testing on the FrontierCode 2.0 evaluation, Fable 5.2 at High effort scored about level with Opus 5.5 at Max effort, for roughly half the cost per task. It still recommends most users start with Opus 5.5 for coding and knowledge tasks. These are Anthropic's own results.
Underlined sentences link to the facts we checked. Dotted words open a short explainer.
Fact 5 of 12 · from Anthropic, 9 Nov 2026
Claude Fable 5.2 is available today on all platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure.
Fact 7 of 12 · from Anthropic, 9 Nov 2026
In early testing on the FrontierCode 2.0 evaluation, Fable 5.2 at High effort scored about level with Opus 5.5 at Max effort, for roughly half the cost per task.
What it means for you
Our viewThe price covers both models, but only Fable 5.2 is open for general use, so Fable 5.2 is the one most teams can try. Anthropic still recommends starting with Opus 5.5 for most coding and knowledge tasks.
In its early testing on the FrontierCode 2.0 evaluation, Anthropic says Fable 5.2 at High effort scored about level with Opus 5.5 at Max effort for roughly half the cost per task; those are Anthropic's own results. Before you switch, run a sample of your own coding tasks on both models and compare the cost per task.
It adds no new facts.
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Check our sources
Every sentence above is checked against these 2 sources.
1 Claude Fable 5.2 and Claude Mythos 5.2
Open the source archived copy-
Anthropic's launch post says Claude Fable 5.2 and Claude Mythos 5.2 are available at $8 per million input tokens and $40 per million output tokens, which it calls a lower price.
citeThey generate outputs up to 30% faster than Claude Fable 5.1 and Claude Mythos 5.1, and they’re available at a lower price: $8 per million input tokens and $40 per million output tokens.
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Anthropic's launch post says the models generate outputs up to 30% faster than Claude Fable 5.1 and Claude Mythos 5.1.
citeThey generate outputs up to 30% faster than Claude Fable 5.1 and Claude Mythos 5.1
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Anthropic's launch post says Fable 5.2 and Mythos 5.2 come with an optional fast mode that speeds up token generation by up to 2.5 times.
citeFable 5.2 and Mythos 5.2 also come with an optional fast mode, which speeds up token generation by up to 2.5 times.
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Anthropic's launch post says fast mode costs $16 per million input tokens and $80 per million output tokens.
citeFast mode is available for $16 per million input tokens and $80 per million output tokens.
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Anthropic's launch post says Claude Fable 5.2 is available today on all platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure.
citeClaude Fable 5.2 is available today on all platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure.
-
Anthropic's launch post says developers can get started with claude-fable-5-2 on the Claude Platform.
citeDevelopers can get started with claude-fable-5-2 on the Claude Platform.
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Anthropic's launch post says that in its early testing on the FrontierCode 2.0 evaluation, Fable 5.2 at High effort scored about level with Opus 5.5 at Max effort, for roughly half the cost per task.
Toned down to what the source says
citeIn early testing on the FrontierCode 2.0 evaluation, Fable 5.2 at High effort scored about level with Opus 5.5 at Max effort, for roughly half the cost per task.
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Anthropic's launch post says that for most coding and knowledge tasks it recommends users start with Claude Opus 5.5, which it calls its strongest daily driver.
citeFor most coding and knowledge tasks, we recommend that users start with Claude Opus 5.5, our strongest daily driver
2 https://assets.claude.com/27d60918d218125e7504bc7354c4b4626ec56b11.pdf
Open the source archived copy-
Anthropic published the launch post for Claude Fable 5.2 and Claude Mythos 5.2 on 9 November 2026; the system card is dated 9 November 2026.
citeSystem Card: Claude Fable 5.2 & Claude Mythos 5.2 November 9, 2026
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The system card says Claude Fable 5.2 and Claude Mythos 5.2 are two configurations of a new large language model from Anthropic.
citeClaude Fable 5.2 and Claude Mythos 5.2 are two configurations of a new large language model from Anthropic.
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The system card says Claude Fable 5.2 is available for general use and has additional safeguards that prevent it from performing certain tasks in high-risk, dual-use domains such as biology and cybersecurity.
citeClaude Fable 5.2 is available for general use and has additional safeguards that prevent it from performing certain tasks in high-risk, dual-use domains, such as biology and cybersecurity.
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The system card says Claude Mythos 5.2 has more permissive safeguards in those domains, and that direct access to it is limited to vetted individuals and organizations through Anthropic's trusted access programs.
citeClaude Mythos 5.2 has more permissive safeguards in these domains. Direct access to Claude Mythos 5.2 is limited to vetted individuals and organizations through our trusted access programs.
Every sentence above is checked against these 2 sources. Each fact has its own address you can cite.
Source 1 · Anthropic · 9 Nov 2026
Claude Fable 5.2 and Claude Mythos 5.2
Anthropic's launch post says Claude Fable 5.2 and Claude Mythos 5.2 are available at $8 per million input tokens and $40 per million output tokens, which it calls a lower price.
They generate outputs up to 30% faster than Claude Fable 5.1 and Claude Mythos 5.1, and they’re available at a lower price: $8 per million input tokens and $40 per million output tokens.
Anthropic's launch post says the models generate outputs up to 30% faster than Claude Fable 5.1 and Claude Mythos 5.1.
They generate outputs up to 30% faster than Claude Fable 5.1 and Claude Mythos 5.1
Anthropic's launch post says Fable 5.2 and Mythos 5.2 come with an optional fast mode that speeds up token generation by up to 2.5 times.
Fable 5.2 and Mythos 5.2 also come with an optional fast mode, which speeds up token generation by up to 2.5 times.
Show all 8 factsShow fewer facts
Anthropic's launch post says fast mode costs $16 per million input tokens and $80 per million output tokens.
Fast mode is available for $16 per million input tokens and $80 per million output tokens.
Anthropic's launch post says Claude Fable 5.2 is available today on all platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure.
Claude Fable 5.2 is available today on all platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure.
Anthropic's launch post says developers can get started with claude-fable-5-2 on the Claude Platform.
Developers can get started with claude-fable-5-2 on the Claude Platform.
Anthropic's launch post says that in its early testing on the FrontierCode 2.0 evaluation, Fable 5.2 at High effort scored about level with Opus 5.5 at Max effort, for roughly half the cost per task.
Toned down to what the source saysIn early testing on the FrontierCode 2.0 evaluation, Fable 5.2 at High effort scored about level with Opus 5.5 at Max effort, for roughly half the cost per task.
Anthropic's launch post says that for most coding and knowledge tasks it recommends users start with Claude Opus 5.5, which it calls its strongest daily driver.
For most coding and knowledge tasks, we recommend that users start with Claude Opus 5.5, our strongest daily driver
Source 2 · 9 Nov 2026
https://assets.claude.com/27d60918d218125e7504bc7354c4b4626ec56b11.pdf
Anthropic published the launch post for Claude Fable 5.2 and Claude Mythos 5.2 on 9 November 2026; the system card is dated 9 November 2026.
System Card: Claude Fable 5.2 & Claude Mythos 5.2 November 9, 2026
The system card says Claude Fable 5.2 and Claude Mythos 5.2 are two configurations of a new large language model from Anthropic.
Claude Fable 5.2 and Claude Mythos 5.2 are two configurations of a new large language model from Anthropic.
The system card says Claude Fable 5.2 is available for general use and has additional safeguards that prevent it from performing certain tasks in high-risk, dual-use domains such as biology and cybersecurity.
Claude Fable 5.2 is available for general use and has additional safeguards that prevent it from performing certain tasks in high-risk, dual-use domains, such as biology and cybersecurity.
Show all 4 factsShow fewer facts
The system card says Claude Mythos 5.2 has more permissive safeguards in those domains, and that direct access to it is limited to vetted individuals and organizations through Anthropic's trusted access programs.
Claude Mythos 5.2 has more permissive safeguards in these domains. Direct access to Claude Mythos 5.2 is limited to vetted individuals and organizations through our trusted access programs.
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