# Together AI

Together AI is an open-source AI company offering a full-stack AI platform, backed by $800M in Series C funding, with ongoing advances in fine-tuning services, GPU kernel research, Y Combinator partnerships, and community conferences.

Status: provisional
Last verified: 2026-08-31T02:05:03.000Z

## Evidence

- (single_source) AI Native Conf 2026 is scheduled for March 16 to April 16, 2026 in San Francisco, CA.
  - supports https://together.ai/ainativeconf
    > Mar 16 - April 16, 2026 ... San francisco, ca

- (single_source) Together AI expanded its fine-tuning service with native support for tool calling, reasoning, and vision-language models.
  - supports https://together.ai/blog/fine-tuning-update
    > Together AI expands fine-tuning with native support for tool call, reasoning, and vision-language models, plus 100B+ model training, up to 6× higher throughput, and job cost and ETA estimates.

- (single_source) Together AI has built a full-stack AI platform for open-source AI grounded in frontier research.
  - supports https://together.ai/blog/announcing-our-series-c
    > we have built a full-stack AI platform for open-source AI, grounded in frontier research and delivering

- (single_source) Together AI's kernels team is behind FlashAttention and ThunderKittens.
  - supports https://together.ai/blog/inside-the-together-ai-kernels-team
    > The team behind FlashAttention and ThunderKittens — how Together AI's kernel researchers close the gap between GPU hardware and production AI.

- (single_source) Together AI and Y Combinator announced a partnership to deliver the first dedicated YC GPU cluster for YC's portfolio of AI-native startups.
  - supports https://together.ai/blog/together-yc-gpu-cluster
    > Together AI and Y Combinator (YC) are announcing a partnership to deliver the first dedicated YC GPU cluster, giving YC's portfolio of AI-native startups easier access to the compute they need to build and scale.

- (single_source) AI Native Conf is a conference for founders and builders at AI-native companies organized by Together AI.
  - supports https://together.ai/ainativeconf
    > The conference for builders and founders at AI-native companies, AI Native Conf features technical deep dives, lessons learned in production, and cutting-edge research from leaders in AI.

- (single_source) Together AI raised $800M in a Series C funding round to accelerate the shift to open-source AI.
  - supports https://together.ai/blog/announcing-our-series-c
    > We raised $800M to accelerate the shift to open-source AI. ... Announcing our $800M Series C to accelerate the shift to open-source AI

- (single_source) Together AI was started four years ago by its co-founders who saw generative AI as a turning point for human progress.
  - supports https://together.ai/blog/announcing-our-series-c
    > Four years ago, my co-founders and I started Together AI because we saw generative AI as a turning point for human progress.

- (single_source) Together AI and Y Combinator announced a partnership at AI Native Conf to deliver the first dedicated YC GPU cluster.
  - supports https://together.ai/ainativeconf
    > 🤝 Together AI & Y Combinator announce partnership to deliver the first dedicated YC GPU cluster →

- (single_source) Together AI's kernels team works on closing the gap between GPU hardware and production AI.
  - supports https://together.ai/blog/inside-the-together-ai-kernels-team
    > how Together AI's kernel researchers close the gap between GPU hardware and production AI.

## Timeline

- 2026-08-31T01:55:20.000Z: Together AI raised $800M in a Series C round to accelerate open-source AI adoption. Together AI was founded four years ago by co-founders who viewed generative AI as a turning point for human progress. Together AI has built a full-stack AI platform for open-source AI grounded in frontier research. Together AI and Y Combinator partnered to deliver the first dedicated YC GPU cluster for AI-native startups. Together AI organizes AI Native Conf, a conference for founders and builders at AI-native companies. AI Native Conf 2026 is scheduled for March 16 to April 16, 2026 in San Francisco, CA. Together AI and Y Combinator announced their GPU cluster partnership at AI Native Conf. Together AI expanded fine-tuning with native support for tool calling, reasoning, and vision-language models. Together AI's kernels team is behind FlashAttention and ThunderKittens. Together AI's kernels team works on bridging GPU hardware and production AI.