ellmer
ellmer stopped being a chat wrapper and started shipping the parts production LLM code needs
Comparison · ai-assistants
btw vs Ollama
A side-by-side editorial comparison of btw and Ollama — release velocity, themes, recent moves, and the top alternatives to consider.
btw vs Ollama: at a glance
What is btw?
btw is turning into an agentic R harness that no longer needs you to be in R
btw assembles context about an R session — packages, documentation, files, data frames — and hands it to an LLM through ellmer, with btw_app() as a chat interface. Over the last year it has grown well past context assembly: LLMs can document, check, test and measure coverage of a package, read CLAUDE.md and AGENTS.md as project context, fetch skills from packages or GitHub, and inspect the source of any installed namespace. Much of this is now reachable from a terminal CLI rather than only from an R prompt.
What is Ollama?
Ollama now ships on the model release calendar, with an MLX build attached to each drop.
Ollama's last six releases are almost entirely about what it can run and how fast it runs it. Qwen 3.8 27B arrives in v0.32.12 with a hand-optimized MLX variant for Apple Silicon, following the same pattern set by Laguna XS 2 and S 2.1 earlier in the window. The remaining work is quantization and prefill performance — NVFP4 global-scale kernel fusion for roughly 7-8% faster prefill — plus launch integrations for third-party coding harnesses.
btw vs Ollama: editorial side-by-side
btw
2.5AI-ASSISTANTS
btw is turning into an agentic R harness that no longer needs you to be in R
◆ Current state
btw assembles context about an R session — packages, documentation, files, data frames — and hands it to an LLM through ellmer, with btw_app() as a chat interface. Over the last year it has grown well past context assembly: LLMs can document, check, test and measure coverage of a package, read CLAUDE.md and AGENTS.md as project context, fetch skills from packages or GitHub, and inspect the source of any installed namespace. Much of this is now reachable from a terminal CLI rather than only from an R prompt.
◆ Where it's heading
The direction is from describing a session to operating on it, and from inside R to outside it. Each release adds either a tool group that lets a model do something (document, check, test, cover; read namespace source; fetch skill resources) or a CLI command that removes the need to start R first. The 1.2.0 tool renaming — session becoming sessioninfo, search becoming cran, files_read_text_file becoming files_read — reads as the naming cleanup you do when you expect a lot more tools to follow.
◆ Prediction
The CLI has been absorbing one tool family per release (skills, then pkg desc and pkg src) while the R-side tool groups stay ahead of it, so the next releases likely continue exposing existing tool groups as terminal commands rather than adding new capabilities.
Ollama
5.0AI-ASSISTANTS
Ollama now ships on the model release calendar, with an MLX build attached to each drop.
◆ Current state
Ollama's last six releases are almost entirely about what it can run and how fast it runs it. Qwen 3.8 27B arrives in v0.32.12 with a hand-optimized MLX variant for Apple Silicon, following the same pattern set by Laguna XS 2 and S 2.1 earlier in the window. The remaining work is quantization and prefill performance — NVFP4 global-scale kernel fusion for roughly 7-8% faster prefill — plus launch integrations for third-party coding harnesses.
◆ Where it's heading
MLX is no longer a side path here. Every recent model addition lands with an Apple Silicon build tuned separately from the CUDA path, and the performance work in this window (NVFP4 fusion, repeat_penalty defaults matched to other engines) reads as Ollama closing the gap with the runtimes it competes against rather than differentiating from them. The launch integrations for Muse Code and DeepSeek Harness are a smaller, steadier thread: the runtime positioning itself under other people's coding agents.
◆ Prediction
Expect the next notable release to be another same-week model addition with a paired MLX build, since that is what four of the last six entries have been. Whether the coding-harness integrations keep accumulating is less clear from this window — v0.32.11 is the only entry that touches them.
Alternatives to btw and Ollama
Other ai-assistants products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either btw or Ollama.
tfevents
tfevents logs TensorBoard events from R, and this release only changes who maintains it.
safetensors
safetensors for R changes hands with no code change to show for it.
torchdatasets
torchdatasets ships custodial work as mlverse gathers its torch satellites under one maintainer.
mlr3tuningspaces
A curated catalogue of published hyperparameter search spaces, now reaching deep neural networks
mlr3hyperband
Hyperband tuning for mlr3, now built on an asynchronous backend it treats as mandatory
Recent activity from btw and Ollama
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 10h agoOllamaQwen 3.8 27B lands, with an MLX build for Apple Silicon
- 20h agoOllamaQwen 3.8 gains developer-instruction support
- 1d agoOllamaMuse Code and DeepSeek Harness launch integrations
- 2d agoOllamarepeat_penalty now defaults off; NVFP4 prefill ~8% faster
- 2d agoOllamaRelease candidate: fused multiply-and-cast for NVFP4 prefill
- 10d agobtwbtw 1.4.0 adds CLI commands for reading R package source
- 21d agoOllamaLaguna XS 2 and S 2.1 run on MLX with mixed-precision experts
- 1mo agobtwbtw 1.3.0 makes skills fetchable from the terminal ⚡
- 4mo agobtwbtw 1.2.1
- 5mo agobtwbtw 1.2.0 renames its tool groups ahead of expansion
- 7mo agobtwbtw 1.1.0 lets an LLM document, check and test an R package ⚡
Frequently asked questions
What is the difference between btw and Ollama?
They serve adjacent needs but don't currently overlap on shipped themes. Ollama is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is btw better than Ollama?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Ollama is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other ai-assistants products to evaluate alongside.
What are the best alternatives to btw?
Top btw alternatives in ai-assistants are ranked by recent ship velocity. Browse the "btw alternatives" section above for the current picks, or visit /alternatives/btw-r for the full list with editorial commentary on each.
What are the best alternatives to Ollama?
Top Ollama alternatives in ai-assistants are ranked by recent ship velocity. Browse the "Ollama alternatives" section above for the current picks, or visit /alternatives/ollama for the full list with editorial commentary on each.