Mercury Edit 2 API Pricing
Mercury Edit 2 carries the same card as Mercury 2 - $0.25/M input, $0.025/M cached, $0.75/M output - but it is not a chat model. It serves v1/fim/completions and v1/edit/completions: fill-in-the-middle autocomplete and next-edit suggestions for code tooling, with a 32K window and 8,192 max output tokens. It is still on Inception's developer table, and the closure that took Mercury 2 and 2.5 off for new users on October 19, 2026 does not name it.
Mercury Edit 2 API cost calculator.
The rate is identical to Mercury 2, so the calculator differs only in the shape of the workload: editing traffic is many small requests, not a few large ones, and the per-request figures below matter more than the per-million rate.
Mercury Edit 2 cost on real workloads.
Inline completion
Next-edit suggestion
Single-file edit
Multi-file refactor
This is a chars-per-token approximation, not a real tokenizer. Actual tokens vary by language, code density, and tool-call overhead — counts are typically ±10–20% off for English prose, more for code or non-Latin scripts. For exact billing, use the vendor's official tokenizer.
| Model | Input /M | Output /M | Effective blended | Context | Best for |
|---|---|---|---|---|---|
| Mercury Edit 2 Current | $0.25 cache $0.025 | $0.75 | $0.12 agentic 92/8 | 32K | IDE autocomplete and next-edit suggestions |
| Mercury 3 | $0.20 cache $0.02 | $0.70 | $0.104 −13% · promo | 1M | General production traffic |
| Doubao Seed Evolving | $0.893 cache $0.178 | $4.46 | $0.64 +5.3× | 1M | Coding agents on Volcano Ark |
| KAT-Coder-Air V2.5 | $0.149 cache $0.0298 | $0.595 | $0.0947 −21% | 256K | Budget coding model |
Mercury Edit 2 API pricing FAQ.
Why it costs the same as the chat model, what the endpoints do, and what "supported for existing customers" means for a new integration.
Q · 01 What does Mercury Edit 2 cost? +
$0.25/M input, $0.025/M cached input, $0.75/M output, giving $0.12/M effective under our 92/8 blend. Inception does not discount the editing endpoints.Q · 02 How is it different from Mercury 2? +
v1/fim/completions and v1/edit/completions instead of chat completions, which is what code tooling needs for inline autocomplete and next-edit suggestions. The context window is 32K on both endpoints against Mercury 2's 128K, and max output is 8,192 against 50,000.