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Favicon for xingchen-agi

XingChen: Xing4.0 29B A4B (free)

xingchen-agi/xing4.0-29b-a4b:free

Model weights
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Xing4.0-29B-A4B is an open-weight mixture-of-experts language model from China Telecom's AI team (TeleAI) and the successor to the TeleChat series. It has 29B total parameters with 4B active per token and a native 256K-token context window. It was trained entirely on Ascend NPUs with the MindSpore framework and is tuned for complex engineering and agent work: tool calling, multi-step planning, and long-context execution. Reasoning is on by default and can be turned off.

Modalities
Price
Free
Context
262K
Released
Oct 16, 2026
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ProvidersPerformanceUptimeAppsActivityFAQExplore

Providers

This model is hosted by one provider. OpenRouter forwards every request to it directly — no routing decisions to make.

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Activity

Token volume and request traffic to this model over time.

API

Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.

Not currently available through EU in-region routing. In-region routing docs

Explore more models

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FreeFree4.04s9 tps
95.67%
Throughput
9tok/s

P50, best across providers

Latency
4.04s

P50, best provider

Uptime (3d)The model was reachable. Request routed to a provider.
99.96%
Availability (3d)The model returned inference from any provider. Errors and empty responses count against it.
95.10%

Availability over the last 3 days

Last 72 hours
Availability 95.10%
3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability
95.03%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and provider routing options.

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Frequently asked questions

Xing4.0-29B-A4B is an open-weight mixture-of-experts language model from China Telecom's AI team (TeleAI) and the successor to the TeleChat series. It has 29B total parameters with 4B active per token and a native 256K-token context window.

Yes. The pricing shown on this page for Xing4.0 29B A4B (free) is zero, so you are not charged for prompt or completion tokens. Free endpoints are rate limited — see the rate limit docs.

Xing4.0 29B A4B (free) has a 262,144 token context window. It supports up to 262,144 completion tokens.

Yes. Xing4.0 29B A4B (free) accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.

Xing4.0 29B A4B (free) was released on October 16, 2026.

More models from XingChen

Xing4.0 29B A4B

Xing4.0-29B-A4B is an open-weight mixture-of-experts language model from China Telecom's AI team (TeleAI) and the successor to the TeleChat series. It has 29B total parameters with 4B active per token and a native 256K-token context window. It was trained entirely on Ascend NPUs with the MindSpore framework and is tuned for complex engineering and agent work: tool calling, multi-step planning, and long-context execution. Reasoning is on by default and can be turned off.

Text262K contextFree