StepFun Step 2 Mini vs xAI Grok 4.7: Live Promos, Pricing, Hidden Fees & Latency
StepFun Step 2 Mini (stepfun/step-2-mini) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for StepFun Step 2 Mini: Activate ephemeral prefix caching to slash input costs by 90% (down to 0.01/1M) or route via asynchronous Batch API for 50% off standard token rates.
xAI Grok 4.7 (grok-4.7) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for xAI Grok 4.7: Activate ephemeral prefix caching to slash input costs by 75% (down to 0.5/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing StepFun Step 2 Mini (API ID: stepfun/step-2-mini) vs xAI Grok 4.7 (API ID: grok-4.7), StepFun Step 2 Mini offers lower standard input pricing at $0.1/1M tokens ($0.3/1M output), while StepFun Step 2 Mini leads in cached prefix economics at $0.01/1M tokens (90% discount). xAI Grok 4.7 achieves a 65ms faster P90 time-to-first-token latency (130ms vs 195ms).
Gateway-synced rate ($0.1/$0.3 per 1M, flat 32K window). Verify upstream provider cache TTL and regional routing before high-volume batch runs.
<200K: $2.00/$6.00 ($0.50 cache); >=200K (including cached tokens) full-request 2x cliff: $4.00/$12.00 ($1.00 cache). Not eligible for Batch discount (0%); Priority 2x; US endpoint +10%.
| Specification / FinOps Dimension | StepFun Step 2 Mini | xAI Grok 4.7 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | stepfun/step-2-mini | grok-4.7 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.1 / $0.3 | $2 / $6 | StepFun Step 2 Mini |
| Cache Read Price (per 1M) | $0.01/1M (90% Off) | $0.5/1M (75% Off) | StepFun Step 2 Mini |
| Context Window / Max Output | 32K In / 64K Out | 500K In / 128K Out | xAI Grok 4.7 |
| P90 First-Token / Edge Latency | 195ms | 130ms | xAI Grok 4.7 (-65ms) |
StepFun Step 2 Mini (stepfun/step-2-mini): OpenRouter gateway-synced model at $0.1/1M input, $0.3/1M output, $0.01/1M cached input (32K context window).
xAI frontier reasoning & coding model (500K context): <200K at $2/$6 ($0.50 cache); >=200K at $4/$12 ($1.00 cache). No batch discount.
Real-Time Stack Cost & Hidden-Fee Simulator (MAU / Token / Egress / GMV)
Calibrated with Reddit r/FinOps & r/devops telemetry: Includes Context Caching, Bandwidth Egress, and MoR Tax
✖️Switch from StepFun Step 2 Mini to xAI Grok 4.7
xAI frontier reasoning & coding model (500K context): <200K at $2/$6 ($0.50 cache); >=200K at $4/$12 ($1.00 cache). No batch discount. Verified P90 latency of 130ms.