White Paper

GPT-5.6 Sol: Independent Evaluation White Paper

The capability leader for professional work is powerful, costly, and still use-case dependent. Use for assignments where review cost or failure cost dominates token price. Run a lower-effort baseline first, then escalate only tasks that benefit from deeper reasoning. This conclusion is a procurement hypothesis, not a universal ranking: the report synthesizes public evidence and does not claim to have run a private laboratory evaluation.

Claude Opus 5: Independent Evaluation White Paper

The strongest measured all-rounder, with a premium price and a clear agentic-work advantage. Shortlist when the output is a reviewed professional artifact rather than bulk text. Compare end-to-end accepted-deliverable cost, not tokens alone. This conclusion is a procurement hypothesis, not a universal ranking: the report synthesizes public evidence and does not claim to have run a private laboratory evaluation.

Gemini 3.7 Flash: Independent Evaluation White Paper

Exceptional throughput changes the economics of multimodal reasoning. Prioritize when human-perceived wait time and mixed-media inputs matter. Re-run cost models at post-introductory prices before committing multi-year volume. This conclusion is a procurement hypothesis, not a universal ranking: the report synthesizes public evidence and does not claim to have run a private laboratory evaluation.

DeepSeek-V4-Pro: Independent Evaluation White Paper

A low-price open-weight contender whose benchmark lead does not reach the frontier tier. Treat V4-Pro as an economics and control candidate. Benchmark it on private tasks against Kimi K3, GLM-5.3 and Qwen3.8-Max before choosing an open-weight stack. This conclusion is a procurement hypothesis, not a universal ranking: the report synthesizes public evidence and does not claim to have run a private laboratory evaluation.

Grok 4.6: Independent Evaluation White Paper

Frontier reasoning at a mid-tier price, with half the context of most direct rivals. Include in evaluations where top-tier reasoning is needed but Opus pricing is difficult to justify. Add a context-overflow test because the 500k limit is the cohort's smallest frontier window. This conclusion is a procurement hypothesis, not a universal ranking: the report synthesizes public evidence and does not claim to have run a private laboratory evaluation.

Llama 4 Maverick: Independent Evaluation White Paper

Open deployment flexibility remains its advantage; current frontier capability does not. Use only after a workload-specific proof confirms adequate quality. Evaluate total cost of ownership—including GPUs, serving, monitoring and safety controls—against hosted open-weight alternatives. This conclusion is a procurement hypothesis, not a universal ranking: the report synthesizes public evidence and does not claim to have run a private laboratory evaluation.

Qwen3.8-Max: Independent Evaluation White Paper

A capable open-weight multimodal flagship, constrained by slow measured output. Shortlist for open multimodal systems with asynchronous workflows. Prototype user-perceived latency early and compare local serving cost with hosted Kimi K3 and GLM-5.3. This conclusion is a procurement hypothesis, not a universal ranking: the report synthesizes public evidence and does not claim to have run a private laboratory evaluation.

Kimi K3: Independent Evaluation White Paper

Open weights reach the frontier tier, but long agent runs expose cost and latency tradeoffs. Use as the first open-weight quality benchmark. Measure accepted-task cost and wall-clock completion time, not just per-token price, before production rollout. This conclusion is a procurement hypothesis, not a universal ranking: the report synthesizes public evidence and does not claim to have run a private laboratory evaluation.

GLM-5.3: Independent Evaluation White Paper

A fast open-weight frontier model with a favorable hosted price. Benchmark alongside Kimi K3: Kimi is the stronger architecture-control reference, while GLM-5.3 may offer a better speed-price balance for production agents. This conclusion is a procurement hypothesis, not a universal ranking: the report synthesizes public evidence and does not claim to have run a private laboratory evaluation.

MiniMax M3: Independent Evaluation White Paper

The throughput leader among open weights, but current capability evidence is uneven. Use when throughput and cost dominate and task-specific acceptance tests confirm adequate quality. Add parser tests for reasoning delimiters and review the modified license before distribution. This conclusion is a procurement hypothesis, not a universal ranking: the report synthesizes public evidence and does not claim to have run a private laboratory evaluation.

GPT-5.5 Model Service Evaluation White Paper

A meta-analysis and cross-validation of public evidence covering intelligence, hallucination, cost efficiency, safety, failure boundaries and practical deployment choices.