GigaChat 3 Ultra vs. Celeris-1

GigaChat 3 Ultra is a breakthrough open-source LLM, offering 702 billion parameters built on an advanced MoE architecture that keeps computation efficient while delivering frontier-level performance. Its design activates only 36 billion parameters per step, combining high intelligence with practical deployment speeds, even for research and enterprise workloads. The model is trained entirely from scratch on a 14-trillion-token dataset spanning ten+ languages, expansive natural corpora, technical literature, competitive programming problems, academic datasets, and more than 5.5 trillion synthetic tokens engineered to enhance reasoning depth. This approach enables the model to achieve exceptional Russian-language capabilities, strong multilingual performance, and competitive global benchmark scores across math (GSM8K, MATH-500), programming (HumanEval+), and domain-specific evaluations. GigaChat 3 Ultra is optimized for compatibility with modern open-source tooling, enabling fine-tuning, inference, and integration using standard frameworks without complex custom builds. Advanced engineering techniques—including MTP, MLA, expert balancing, and large-scale distributed training—ensure stable learning at enormous scale while preserving fast inference. Beyond raw intelligence, the model includes upgraded alignment, improved conversational behavior, and a refined chat template using TypeScript-based function definitions for cleaner, more efficient interactions. It also features a built-in code interpreter, enhanced search subsystem with query reformulation, long-term user memory capabilities, and improved Russian-language stylistic accuracy down to punctuation and orthography. With leading performance on Russian benchmarks and strong showings across international tests, GigaChat 3 Ultra stands among the top five largest and most advanced open-source LLMs in the world. It represents a major engineering milestone for the open community.

Celeris-1 distinguishes itself as a rapid and adaptable language model platform, enhanced by a diffusion model that provides state-of-the-art intelligence at remarkable speeds. In contrast to traditional autoregressive models that produce tokens one after another, Celeris utilizes a diffusion-based inference architecture that facilitates concurrent generation, leading to response times that can be recorded in just milliseconds. On the MMLU-Pro benchmark, Celeris-1 achieves an impressive accuracy rate of 75.9%, with a median response time of 158 milliseconds and an extraordinary output rate of 1,664 tokens per second, placing it in close proximity to top models while functioning more than ten times faster. This robust model is available through an API compatible with OpenAI, making it easy for developers to integrate it into their existing SDKs and applications with minimal effort. Moreover, it features streaming capabilities that cater to real-time applications, enabling response times as quick as 24 milliseconds without any interruptions or delays, which makes it particularly suitable for interactive scenarios. Additionally, Celeris-1’s innovative architecture not only enhances its performance but also sets a new standard for future language model development. Overall, Celeris-1 signifies a remarkable leap forward in the efficiency and capability of language models.