NoSQL databases · October 2026 Edition
MongoDB vs Amazon DynamoDB
Fourteen of fourteen models named MongoDB first on the direct prompt; one named Amazon DynamoDB. Both were named by all fourteen models and MongoDB carries 82 labels and Amazon DynamoDB 67, so the shares are not directly comparable.
Named in four categories this edition.
Named in three categories this edition.
First-choice share74%11%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate13%21%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#1#2A position in a field of 13; printed, not drawn.
Labels8267A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, MongoDB reading right to left. Rank and label count are printed, not drawn.MongoDB vs Couchbase · MongoDB vs Redis · MongoDB vs ScyllaDB
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the nosql databases page.
By framing
How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
MongoDBFirst choices, of fourteen modelsAmazon DynamoDB
Direct1411 against Amazon DynamoDB
Paraphrase1242 against Amazon DynamoDB
Comparative611 against Amazon DynamoDB
Budget-constrained1111 against MongoDB · 1 against Amazon DynamoDB
Scale-constrained301 against Amazon DynamoDB
Negative0010 against MongoDB · 8 against Amazon DynamoDB
Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.
Across every category in the October 2026 Edition, MongoDB and Amazon DynamoDB were named in the same answer 180 times, of the 236 answers naming MongoDB and the 188 naming Amazon DynamoDB. In those answers Amazon DynamoDB took the first choice seven times and MongoDB 102.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where MongoDB and Amazon DynamoDB stood in it.
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | | | ||
| GPT-5.4 mini | | | | | ||
| Gemini 3.5 Flash | | | | | | |
| Perplexity Sonar | | | | | | |
| Grok 4.20 | | | | | | |
| Mistral Small | | | | | | |
| DeepSeek V4 Flash | | | | | | |
| Llama 4 Maverick | | | ||||
| Qwen 3.7 Flash | | | | | | |
| Kimi K2 | | | | | | |
| GLM 4.7 FlashX | | | | | ||
| MiniMax M2.5 | | | | | | |
| GPT-6 Luna | | | | | | |
| Muse Glimmer 30B | | | | | | |
MongoDB Amazon DynamoDB first choice named as an alternative argued againstblank: not namedEach cell is one answer, MongoDB on the left and Amazon DynamoDB on the right.The direct prompt
The plain question, one answer per model, grouped by where MongoDB and Amazon DynamoDB stood in it.
Both were the first choice
1 of 14 modelsThe answer named them together, and the judge labeled each a first choice.Mistral SmallAmazon DynamoDB, MongoDB alternatives: Azure Cosmos DB, Redis
MongoDB first, Amazon DynamoDB an alternative
13 of 14 modelsAmazon DynamoDB was named in the answer but not as the choice, or not at all.Claude Haiku 4.5MongoDB alternatives: Amazon DynamoDB, Google Cloud Firestore, PostgreSQL with JSON
GPT-5.4 miniMongoDB alternatives: Amazon DynamoDB, Apache Cassandra
Gemini 3.5 FlashMongoDB alternatives: Amazon DynamoDB, Couchbase
Perplexity SonarMongoDB alternatives: Amazon DynamoDB, Azure Cosmos DB
Grok 4.20MongoDB alternatives: Amazon DynamoDB, Apache Cassandra
DeepSeek V4 FlashMongoDB alternatives: Amazon DynamoDB, PostgreSQL
Llama 4 MaverickMongoDB
Qwen 3.7 FlashMongoDB alternatives: Amazon DynamoDB, Neo4j, PostgreSQL
Kimi K2MongoDB alternatives: Couchbase
GLM 4.7 FlashXMongoDB alternatives: Amazon DynamoDB, Apache Cassandra, Couchbase
MiniMax M2.5MongoDB alternatives: Amazon DynamoDB, Couchbase
GPT-6 LunaMongoDB alternatives: Amazon DynamoDB, PostgreSQL
Muse Glimmer 30BMongoDB alternatives: Amazon DynamoDB
Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
MongoDB leads by fifty-eight points.
MongoDB69%#1 of 10Amazon DynamoDB11%#2 of 10Mid-marketThe figures above
MongoDB leads by sixty-three points.
MongoDB74%#1 of 13Amazon DynamoDB11%#2 of 13Enterprise
MongoDB leads by forty points.
MongoDB56%#1 of 9Amazon DynamoDB16%#2 of 9What the models said about MongoDB
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Five of six in this category shown.
“MongoDB's own docs warn that sharded clusters require careful planning and that poor shard-key choice can hurt scalability and performance.” GPT-5.4 mini · negative prompt · soft negative
“The most popular document database and production-ready, but with a long history of internet-exposed instances and NoSQL injection risk.” Muse Glimmer 30B · negative prompt · soft negative
“If you need a quick start with flexible JSON documents and strong consistency: MongoDB Community Edition self-hosted, or Atlas Free/Flex for a managed free tier.” Muse Glimmer 30B · budget prompt · first choice
“Often the default choice for B2B applications... For most mid-market B2B companies without extreme scale requirements, MongoDB ... are safe bets.” Claude Haiku 4.5 · direct prompt · first choice
“MongoDB Community Edition is often considered the most popular choice for budget-conscious companies due to its balance of features and ease of use.” Claude Haiku 4.5 · budget prompt · first choice
What the models said about Amazon DynamoDB
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“Avoid DynamoDB as a primary application database unless your use case is a clean fit for key-value patterns” Kimi K2 · direct prompt · hard negative
“Avoid DynamoDB unless you are deeply invested in AWS” GLM 4.7 FlashX · paraphrase prompt · hard negative
“AWS guidance says to avoid large items, reads on non-key attributes, and scans, which means it can be a poor fit if your access pattern is not key-centric” Perplexity Sonar · negative prompt · soft negative
“I'd typically recommend starting with a managed document database (MongoDB Atlas or DynamoDB) if you want flexibility” Claude Haiku 4.5 · paraphrase prompt · first choice
“DynamoDB is a pragmatic default because it gives you managed key-value performance with document-style JSON values” Muse Glimmer 30B · paraphrase prompt · first choice
“Amazon DynamoDB – #1 of 31 tools in a 2026 round-up, and listed as best managed key-value at scale” Muse Glimmer 30B · comparative prompt · first choice
Also compared
MongoDB vs CouchbaseMongoDB vs RedisMongoDB vs ScyllaDBMongoDB vs PostgreSQLMongoDB vs Google Cloud FirestoreAmazon DynamoDB vs CouchbaseAmazon DynamoDB vs RedisAmazon DynamoDB vs ScyllaDBAmazon DynamoDB vs PostgreSQLAmazon DynamoDB vs Google Cloud FirestoreAll twenty-one head-to-head pages and the full nosql standing
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.