Availability: Reportedly suspended in June 2026 under a US export-control directive — availability unconfirmed. Verify with Anthropic before relying on it.
Today's price · per 1M tokens
Input
$10.00
per 1M tokens
Output
$50.00
per 1M tokens
Blended
$20.00
blended $/1M — 3:1 weighted input:output
Cached input
$1.00
10% of input — prompt caching
Source: official Anthropic pricing · read Jun 27, 2026
MODELPRICEWATCH.COM · 2026-08-09
Overview
Anthropic Claude Mythos 5. Limited availability (Glasswing program). $10/$50 per 1M tokens.
Capabilities
struck through = not supportedInput 2/5
Text ✓
Image ✓
Audio
Video
PDF
Output 1/5
Text ✓
Image
Audio
Video
Embedding
Features 4/9
Prompt caching ✓
Reasoning ✓
Coding
Fast inference
Long context ✓
Open weights
Multimodal ✓
Web search
Realtime
Benchmark performance
accuracy % · higher is betterAvg benchmark score87.5%
Perf per $/Mtok4.4
GPQA Diamond
94.1%
SWE-Bench Verified
95.5%
Terminal-Bench 2.1
88%
Humanity's Last Exam
64.5%
HumanEval
95.5%
How it stacks up
- Ranks #5 of 67 benchmarked models by average score
- Ranks #2 of 150 comparably-measured models by percentile score, across 5 independent measurements
- Ranks #139 of 150 comparably-tested models by normalized performance per dollar
- Strongest at HumanEval — 95.5%, #2 of 45
Source: Vellum LLM Leaderboard · updated Aug 9, 2026 · See full rankings →
Specifications
- Provider
- Anthropic
- Context window
- 1M tokens
- Modality
- text, image
- Parameters
- Proprietary
- Open source
- No — proprietary
- Released
- Jun 9, 2026
- Status
- Current
- Last updated
- Jun 27, 2026
- Tags
Availability verified: Aug 9, 2026 — listed on Anthropic's own page