Mercury Coder is the first diffusion large language model (dLLM). Applying a breakthrough discrete diffusion approach, the model runs 5-10x faster than even speed optimized models like Claude 3.5 Haiku and GPT-4o Mini while matching their p…
Model details →Inception: Mercury Coder vs OpenAI: gpt-oss-20b
OpenAI: gpt-oss-20b wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for lower-latency inference and deplo…
Model details →Side-by-side comparison
| Capability | Inception: Mercury Coder | OpenAI: gpt-oss-20b | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 128K | 131K | 🏆 OpenAI: gpt-oss-20b |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.25 | $0.03 | 🏆 OpenAI: gpt-oss-20b |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.75 | $0.11 | 🏆 OpenAI: gpt-oss-20b |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | — | — | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | — | Yes | 🏆 OpenAI: gpt-oss-20b |
Frequently asked questions
Is Inception: Mercury Coder better than OpenAI: gpt-oss-20b?
OpenAI: gpt-oss-20b wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Inception: Mercury Coder and OpenAI: gpt-oss-20b?
Input: $0.25 vs $0.03 per 1M tokens. Output: $0.75 vs $0.11 per 1M tokens.
What context windows do Inception: Mercury Coder and OpenAI: gpt-oss-20b support?
Inception: Mercury Coder supports up to 128K tokens. OpenAI: gpt-oss-20b supports up to 131K tokens.
Do both Inception: Mercury Coder and OpenAI: gpt-oss-20b support tool calling?
Inception: Mercury Coder: yes. OpenAI: gpt-oss-20b: yes.