# Kimi K3.1 Pro live on Fireworks: 2.78T MoE, 64.7% on Sierra τ³-Banking

Canonical: https://theagenticweekly.com/news/kimi-k3-1-pro-on-fireworks · Evidence: Reported · First seen: 2026-11-05 20:28 UTC · Source published: 2026-11-04 00:00 UTC · Brief published: 2026-11-06 06:14 UTC · Updated: 2026-11-06 06:14 UTC · Author: Agentic Weekly

> Fireworks announced on November 4, 2026 that Moonshot's Kimi K3.1 Pro is live on its platform: 2.78T total / 104B active parameters, 1040k input context, and first of 19 on Sierra's τ³-Banking at 64.7% in Fireworks' Specialized Intelligence Index. Serverless pricing is $2.00 uncached input, $0.20 cached input and $10.00 output per million tokens.

Models in this brief: [Kimi K3.1 Pro](https://theagenticweekly.com/models/kimi-k3-1-pro), [Claude Opus 5.5](https://theagenticweekly.com/models/claude-opus-5-5)

## What changed

- Hosting: Moonshot's existing Kimi K3.1 Pro model is available on Fireworks serverless (pay-per-token) and dedicated deployments; model id accounts/fireworks/models/kimi-k3p1-pro.
- Fireworks restates the model as text and vision, 2.78T total / 104B active parameters, 1040k input context, 896 experts with 16 active per token, using Kimi Delta Attention plus Gated DeepSeek Sparse Attention.
- On Fireworks' Specialized Intelligence Index, K3.1 Pro ranks first of 19 on Sierra's τ³-Banking at 64.7%, 8.7 points ahead of Claude Opus 5.5.
- Other Fireworks-reported SII scores include 61.0% on Factory Legacy Bench (third of 14, top open model) and a tie with Claude Opus 5.5 at 48.2% on Rogo Big Finance Benchmark.
- Standard serverless pricing per million tokens: $2.00 uncached input, $0.20 cached input, $10.00 output.

## In the source's words

> "It ranks first of 19 on Sierra's τ³-Banking in our Specialized Intelligence Index, 8.7 points ahead of Claude Opus 5.5."
> (Fireworks, Kimi K3.1 Pro on Fireworks, https://fireworks.ai/blog/kimi-k3-1-pro-fireworks)

> "K3.1 Pro ranks first of 19 at 64.7%, 8.7 percentage points ahead of Claude Opus 5.5."
> (Fireworks, Kimi K3.1 Pro on Fireworks, https://fireworks.ai/blog/kimi-k3-1-pro-fireworks)

> "Standard serverless pricing per million tokens: $2.00 uncached input, $0.20 cached input and $10.00 output."
> (Fireworks, Kimi K3.1 Pro on Fireworks, https://fireworks.ai/blog/kimi-k3-1-pro-fireworks)

## Early verdict

A hosting add for an existing Moonshot model, useful if you want Fireworks serverless or dedicated capacity and care about the reported τ³-Banking lead. (Basis: Based on Fireworks' November 4 post; the model itself was already catalogued from Moonshot's earlier launch.)

## What we have not verified

- We did not call the Fireworks endpoint or reproduce the Specialized Intelligence Index scores.
- Parameter and context figures are restated by Fireworks from Moonshot; we did not re-verify them against Moonshot's pages for this hosting brief.
- Dedicated-deployment pricing is not listed in the post.

## Timeline

- Source published: 2026-11-04 00:00 UTC
- First seen by our watcher: 2026-11-05 20:28 UTC (via Fireworks blog)
- Brief published: 2026-11-06 06:14 UTC

## Sources

- [Fireworks blog: Kimi K3.1 Pro on Fireworks](https://fireworks.ai/blog/kimi-k3-1-pro-fireworks) (primary source) (fetched 2026-11-06)

## Related

- [Kimi K3.1 Pro: specs, price and alternatives](https://theagenticweekly.com/models/kimi-k3-1-pro)
- [Claude Opus 5.5: specs, price and alternatives](https://theagenticweekly.com/models/claude-opus-5-5)
- [Claude Opus 5.5 vs GPT-6.1 Sol](https://theagenticweekly.com/compare/claude-opus-5-5-vs-gpt-6-1-sol)
- [Grok 4.7 vs Claude Opus 5.5](https://theagenticweekly.com/compare/grok-4-7-vs-claude-opus-5-5)
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## How to cite

Agentic Weekly, "Kimi K3.1 Pro live on Fireworks: 2.78T MoE, 64.7% on Sierra τ³-Banking", published 2026-11-06 06:14 UTC, https://theagenticweekly.com/news/kimi-k3-1-pro-on-fireworks