Q1 2026 thesis confirmed: the frontier field is splitting into capability vs. price-floor tracks

Q1 2026 saw seven frontier model launches between February and April. Five months later the field has bifurcated cleanly: closed-flagship Anthropic/OpenAI/Google compete on benchmark ceilings, while open-weight DeepSeek/Llama/Qwen/Mistral compete on price floor. Most enterprises will need both.

The capability ceiling is held by Claude Mythos Preview at 93.9% SWE-bench plus partial TLO clear, followed by GPT-5.5 and Claude Opus 4.7. The price floor is held by DeepSeek V4 Flash at $0.14/M input. Between them is a wide middle band where Gemini Flash and the open-weight pro tiers compete on the practical-deployment frontier.

Procurement implication: the "one model, all workloads" pattern is over for any org running serious inference. Q3 2026 RFPs need to anticipate a multi-vendor multi-tier inference stack as the default.

Medium — Q1 2026 frontier field splitting → · TeamAI — 22 frontier models compared →