OpenRouter Fusion
Shares rank 8 of 12 LLM routers by recommenders
Recommended for combining several models into one answer, with a cost-versus-performance graph. The most common caveat is high latency and cost.
Recommended for combining several models into one answer, with a cost-versus-performance graph. The most common caveat is high latency and cost.
17 people gave an opinion
- recommend it
- 7
- criticize it
- 10
- approval share
- 41%
Recommended in 3 of 13 months
- November 2025: not recommended
- December 2025: not recommended
- January 2026: not recommended
- February 2026: not recommended
- March 2026: not recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: recommended
- July 2026: recommended
- August 2026: not recommended
- September 2026: not recommended
- October 2026: recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 7 people recommend itNeeds 10 or more, not met.
- 0.7 recommenders for every criticNeeds 2 to 1 or better, not met.
- Recommended in 3 of 13 monthsNeeds 4 or more, not met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Results judged decent or better
“It came up with a decent response but I guess Opus or GPT 5.5 would do fine anyway.”
Comment from 15 Jun 2026 in “Openrouter Fusion API” “The results weren't that bad. An interesting take on quorums for sure.”
Comment from 15 Jun 2026 in “Openrouter Fusion API” “it does a pretty good job”
Comment from 26 Jul 2026 in “Collective Intelligence: The Next Frontier of AI”
What people warn about
Each mark is one comment
Slow and expensive to run
“This adds a ton of latency and cost, so it's going to be better only for cases where you're willing to wait a lot and pay a lot more.”
Comment from 23 Jul 2026 in “Show HN: Echo – Fable-level results at 1/3 the cost using open-weight models” “I found the one-off prompts I did in their website to cost almost a $1/prompt.”
Comment from 15 Jun 2026 in “Openrouter Fusion API” “As expected, Fusion was 7x slower and 4x the cost.”
Comment from 15 Jun 2026 in “Openrouter Fusion API” - Comment from 15 Jun 2026 in “Openrouter Fusion API”
Other LLM routers people recommend
The four most recommended other LLM routers, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| OpenRouter | 666 | 321 | 67% | 13 | 6 mo8 owners | Approved |
| OpenCode Zen | 36 | 16 | 69% | 12 | — | Approved |
| Cortecs | 9 | 2 | 82% | 6 | — | — |
| Amazon API Gateway | 9 | 9 | 50% | 5 | — | — |
| OpenRouter FusionThis page | 7 | 10 | 41% | 3 | — | — |
What people said
15 of the 17 comments that mention it, newest first. Each links to the original comment.
“Open router fusion is yet another reimplementation of Sakana Fugu.”
“it does a pretty good job”
“This adds a ton of latency and cost, so it's going to be better only for cases where you're willing to wait a lot and pay a lot more.”
“What's nice is that OpenRouter included a pareto graph showing the cost as well as the performance.”
“doesn't say much about coding and long-horizon agentic work”
“Yes does get expensive fast”
“I found the one-off prompts I did in their website to cost almost a $1/prompt.”
“Fusion failed. You can retry from the results view.”
“It doesn't fuse anything.”
“The results weren't that bad. An interesting take on quorums for sure.”
“when you ask one model to judge another's response you don't actually get a better answer”
“It came up with a decent response but I guess Opus or GPT 5.5 would do fine anyway.”
“As expected, Fusion was 7x slower and 4x the cost.”
“writing markdown specs before the coding starts and analysing it for gaps”
“There are multiple models at the level of or better than Fable / Mythos (see OpenRouter's just released Fusion API)”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.