Last signal: Oct 5, 2026, an official statement. newest voice Oct 18, 2025; newest release on record Oct 22, 2024; newest official statement read Oct 5, 2026. No vendor price is published here.
Net
−11
Voices
9
Confidence
Very low
Rank
Listed, not ranked
What the record says · AI Vortex
The most named complaint is accuracy (4 of 9 voices); the most valued thing is ease of use (1). With 9 voices the band runs from −51 to +33: treat it as anecdotes, not a signal. 0 voices come from Hacker News, 9 from Reddit.
What they’re saying · verbatim, newest first
“It’s also an absolute beast to set up, but once you get there it is incredibly powerful and the UI is slick.”
in “AI Tools I Use as an In-House Lawyer” · 2 voices
vLex VincentValues“Vincent AI’s great for research. I haven’t found much for compliance yet.”open
“My comments about how Luminance didn't work at all for me have been downvoted multiple times and there's a four year old account with zero previous comments coming to life and saying Spellbook is great.”
in “Luminance vs Spellbook? Or other contract review software?” · 9 voices
Neutral“In today's demo with Spellbook, the representative specifically told us that due to the OpenAI/Claude limit, it translates (with the various embedded prompts that make their system what it is) to 150-200 pages (depending upon document density).”open
Mixed“I would choose Spellbook over Luminance. All of them seem to have both good and not so good elements, which is likely a function of a) the current state of Gen AI, b) not enough solid training data, and c) user expectations not aligning with the reality.”open
Mixed“Spellbook, I like the way it looks and feels better, but you have to build your own playbooks and I don't have the time to do that and can't do it at the level that IVO did.”open
LuminanceNeutralThe author heard a partner at a law firm uses Luminance and had high expectations, without giving an evaluation. (summary, not a quote)openValues“I am an attorney and think Spellbook is stellar.”open
LuminanceCriticizes“I tried luminance and it was worse than useless. Could not even pick out an effective date in our demo.”open
“I tried luminance and it was worse than useless. Could not even pick out an effective date in our demo.”
in “Luminance vs Spellbook? Or other contract review software?” · 9 voices
Neutral“In today's demo with Spellbook, the representative specifically told us that due to the OpenAI/Claude limit, it translates (with the various embedded prompts that make their system what it is) to 150-200 pages (depending upon document density).”open
Mixed“I would choose Spellbook over Luminance. All of them seem to have both good and not so good elements, which is likely a function of a) the current state of Gen AI, b) not enough solid training data, and c) user expectations not aligning with the reality.”open
LuminanceCriticizes“My comments about how Luminance didn't work at all for me have been downvoted multiple times and there's a four year old account with zero previous comments coming to life and saying Spellbook is great.”open
Mixed“Spellbook, I like the way it looks and feels better, but you have to build your own playbooks and I don't have the time to do that and can't do it at the level that IVO did.”open
LuminanceNeutralThe author heard a partner at a law firm uses Luminance and had high expectations, without giving an evaluation. (summary, not a quote)openValues“I am an attorney and think Spellbook is stellar.”open
“The system is still not able to indicate a CoC clause, as in one instance the solution indicated that a CoC clause was Article 4 (but the Article 4 was something completely different).”
in “Luminance” · 5 voices
LuminanceValues“As I mentioned, Luminance is a decent product, however each product will have strengths and weaknesses.”open
LuminanceValues“From my experience, Luminance works well And it’s workflow capabilities are not something that other platforms have.”open
LuminanceValuesChose Luminance after testing on 50 documents for its AI extraction and easy UI, though niche data points need many training tags. (summary, not a quote)openLuminanceCriticizes“The results are not as great as we have been promised.”open
“From my experience, Luminance works well And it’s workflow capabilities are not something that other platforms have.”
LuminanceCriticizes“The system is still not able to indicate a CoC clause, as in one instance the solution indicated that a CoC clause was Article 4 (but the Article 4 was something completely different).”open
LuminanceValues“As I mentioned, Luminance is a decent product, however each product will have strengths and weaknesses.”open
LuminanceValuesChose Luminance after testing on 50 documents for its AI extraction and easy UI, though niche data points need many training tags. (summary, not a quote)openLuminanceCriticizes“The results are not as great as we have been promised.”open
“As I mentioned, Luminance is a decent product, however each product will have strengths and weaknesses.”
LuminanceCriticizes“The system is still not able to indicate a CoC clause, as in one instance the solution indicated that a CoC clause was Article 4 (but the Article 4 was something completely different).”open
LuminanceValues“From my experience, Luminance works well And it’s workflow capabilities are not something that other platforms have.”open
LuminanceValuesChose Luminance after testing on 50 documents for its AI extraction and easy UI, though niche data points need many training tags. (summary, not a quote)openLuminanceCriticizes“The results are not as great as we have been promised.”open
“The results are not as great as we have been promised.”
in “Luminance” · 5 voices
LuminanceCriticizes“The system is still not able to indicate a CoC clause, as in one instance the solution indicated that a CoC clause was Article 4 (but the Article 4 was something completely different).”open
LuminanceValues“As I mentioned, Luminance is a decent product, however each product will have strengths and weaknesses.”open
LuminanceValues“From my experience, Luminance works well And it’s workflow capabilities are not something that other platforms have.”open
LuminanceValuesChose Luminance after testing on 50 documents for its AI extraction and easy UI, though niche data points need many training tags. (summary, not a quote)openOne-line summaries are written by our classifier, not quotes. Follow “open” for the original.
| Date | Source | Stance | Task | Summary | |
|---|---|---|---|---|---|
| Oct 18, 2025 | r/legaltech | Mixed | Drafting | Luminance is powerful and its Word add-in helps with drafting and markup, but it is expensive, hard to set up and slow on web document review. | open |
| Dec 19, 2024 | r/legaltech | Criticizes | Contract review | Says Luminance did not work at all for them and that vendor demos on their own documents fail on new contracts, with one vendor relying on overseas workers to fix AI errors. | open |
| Dec 17, 2024 | r/legaltech | Criticizes | Contract review | Luminance was worse than useless in the author's demo, failing to identify even an effective date. | open |
| Dec 17, 2024 | r/legaltech | Neutral | General use | The author heard a partner at a law firm uses Luminance and had high expectations, without giving an evaluation. | open |
| Nov 7, 2024 | r/legaltech | Criticizes | Contract review | After years of use at their law firm, Luminance still fails to reliably identify change-of-control clauses despite more than 70 tagged examples, and has not delivered the promised results. | open |
| Oct 26, 2024 | r/legaltech | Values | Contract review | Chose Luminance after testing on 50 documents for its AI extraction and easy UI, though niche data points need many training tags. | open |
| Oct 26, 2024 | r/legaltech | Values | General use | From experience Luminance works well, and its workflow capabilities are not found on other platforms. | open |
| Oct 26, 2024 | r/legaltech | Values | Contract review | Calls Luminance a decent product with strengths and weaknesses like any tool, and suggests API and workflow tools to embed AI into existing processes. | open |
| Oct 25, 2024 | r/legaltech | Criticizes | Contract review | Found Luminance's data extraction results worse than promised despite vendor training. | open |
Last 8 quarters. All tools, with the events around each change →
| Quarter | Voices | Share of voice | Net 90% band |
|---|---|---|---|
| 2025 Q1 | 0 | 0% | n<5 |
| 2025 Q2 | 0 | 0% | n<5 |
| 2025 Q3 | 0 | 0% | n<5 |
| 2025 Q4 | 1 | 0% | n<5 |
| 2026 Q1 | 0 | 0% | n<5 |
| 2026 Q2 | 0 | 0% | n<5 |
| 2026 Q3 | 0 | 0% | n<5 |
| 2026 Q4 | 0 | 0% | n<5 |
Only what the vendor or the model provider says on its own pages, read on Oct 22, 2026. “Not disclosed” means we found no official statement.
| Tool | Model | Status | Period | What the official page says |
|---|---|---|---|---|
| Luminance | Proprietary Luna Crescent plus multi-model; tests GPT 6 Sol/6.1 Sol and Claude Sonnet 5.5/Opus 5.5 | Uses | as of 2026-10-05 | Luminance says it evaluated OpenAI and Anthropic models for Contract Intelligence; final validation pending before production. Its tech page names no providers. Source How Luminance selects AI models for Contract Intelligence, Oct 5, 2026 |
1 distinct ask from 1 voice; 0 followed by an official release note we could verify. An ask with no match means we found no official page, not that nothing shipped. Official pages re-read: Oct 22, 2026.
