Gemini 3.1 Pro at $2.00/$12.00 is the cheapest at 80% less on input and 76% less on output. Within the Claude family, Claude Sonnet 5 at $3.00/$15.00 is 70% cheaper.

Claude Opus 4.8 at $5.00/$25.00 is 50% cheaper on both input and output. Both have 1M context windows and use the Anthropic API. Opus 4.8 is the better value unless you specifically need Mythos 5's unique capabilities.

For most production workloads, yes. Claude Sonnet 5 at $3.00/$15.00 is 70% cheaper and handles most tasks comparably. Reserve Mythos 5 for tasks requiring the absolute highest capability tier.