Last refreshed 2026-06-15. Next refresh: weekly.
Why use Claude Mythos Preview on Anthropic?
Anthropic offers Claude Mythos Preview with pay-as-you-go pricing at $25.00/1M input tokens. Anthropic is a safety-focused AI research company and creator of the Claude model family, offering API access through the Anthropic Console for text generation, analysis, and coding tasks.
Compare Claude Mythos Preview across 2 providers to find the best fit for your use caseSetup recipe
Python + curlpip install anthropicexport ANTHROPIC_API_KEY=...import anthropic
client = anthropic.Anthropic() # reads ANTHROPIC_API_KEY from env
message = client.messages.create(
model="claude-mythos-preview",claude-mythos-previewRequest example
import anthropic
client = anthropic.Anthropic() # reads ANTHROPIC_API_KEY from env
message = client.messages.create(
model="claude-mythos-preview",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello"}]
)
print(message.content[0].text)Gotchas
- Use the versioned model ID, e.g. "claude-sonnet-4-6" or "claude-opus-4-7-20251101".
- The examples expect ANTHROPIC_API_KEY; rename it only if your application config maps the new variable.
Compare Claude Mythos Preview Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Anthropic | $25.00 | $125.00 |
| Microsoft Foundry | — | — |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $25.00 |
| Output tokens | $125.00 |
Capabilities
About Claude Mythos Preview
Anthropic's cybersecurity-focused frontier model, offered as an invitation-only research preview under Project Glasswing. Succeeded by Claude Mythos 5 (API ID: claude-mythos-5) as of June 9, 2026. Anthropic has indicated that Claude Mythos Preview will be retired after Claude Mythos 5 becomes available; no formal retirement date was published as of 2026-06-09. For current access and the migration path, see the Anthropic migration guide.
FAQ
What does Claude Mythos Preview cost on Anthropic?
On Anthropic, Claude Mythos Preview costs $25.00 per 1M input tokens and $125.00 per 1M output tokens.
What is the context window for Claude Mythos Preview on Anthropic?
Claude Mythos Preview supports a 1m token context window on Anthropic.
How does Anthropic compare to other Claude Mythos Preview providers?
Claude Mythos Preview is available from 2 providers. The cheapest input pricing is $25.00/1M tokens from Anthropic.
Who created Claude Mythos Preview?
Claude Mythos Preview was created by Anthropic as part of the Claude Mythos model family.
Is Claude Mythos Preview open source?
Claude Mythos Preview is not open source; the seed data lists it as proprietary.