| Note | Current flagship; frontier-tier value model at $0.50/$1.50 per 1M tokens, ~80-90% cheaper than GPT-5.4 / Claude Sonnet 4.6. | First publicly available Mythos-class model (above Opus); Mythos 5 weights with safety classifiers active. 1M context, $10/$50, highest benchmarks of any GA model. Refusals return stop_reason refusal; mandatory 30-day retention. | Current closed-weights flagship; Intelligence Index v4.0 score 56.6 (top Chinese model); lowest reported hallucination rate (22.9%). $2.50/$7.50 per 1M tokens. |
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