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  1. Home
  2. Best For
  3. Summarization

Best AI for Summarization

Condensing a pitch deck, a two-film analysis and an investment memo without losing the part that mattered. Length is not the metric.

Updated Jun 2026·3 challenges·20 models

How Summarization rankings are computed

20 models tested across 3 summarization challenges.Composite score: 30% Rival Index, 20% task coverage, 20% challenge-scoped duel performance, 15% recency, 15% tier. Deduplicated by product line. GPT-6 Astra leads at 77.3/100. Drawn from Rival's open dataset of 21,000+ human preference votes.

Rival's Pick·#25 Rival Index·Openai flagship

Too close to call
GPT-6 Astra
GPT-6 Astraopenai

Neck and neck with Gemini 3.8 Flash. GPT-6 Astra gets the nod on blind votes.

Composite scores combine task evidence, Rival Index, recency, and model tier. Rival’s Pick is a separate editorial recommendation. How ranking works

Gemini 3.8 Flash
Gemini 3.8 Flash
google
$0.75·$3.75
76Composite
GPT-6 Astra
GPT-6 Astra
openai
$10.00·$50.00
77Composite
Claude Fable 5
Claude Fable 5
anthropic
$10.00·$50.00
73Composite

Head-to-Head

GPT-6 Astra logo
GPT-6 Astra
vs
Gemini 3.8 Flash
Gemini 3.8 Flash logo
GPT-6 Astra logo
GPT-6 Astra
vs
Claude Fable 5
Claude Fable 5 logo
Gemini 3.8 Flash logo
Gemini 3.8 Flash
vs
Claude Fable 5
Claude Fable 5 logo

What the top three actually wrote

Opening lines from 6 answers across every prompt behind this ranking. Formatting stripped, words untouched.

Movie Analysis

Analyze the themes, symbolism, and cinematography in the movie "Blade Runner 2049" and how they connect to the original film. Provide a…

GPT-6 Astra1,245 words
Spoilers for both films follow. Denis Villeneuve’s Blade Runner 2049 honors Ridley Scott’s original by resisting the temptation to resolve its central uncertainty: what makes a being human? Instead, it shifts the question.
Read the full answer
Claude Fable 5896 words
Blade Runner 2049: Memory, Meaning, and the Inheritance of Doubt Thematic Architecture The Question of Authenticity, Inverted The original Blade Runner (1982) asked: "What makes someone human?"
Read the full answer

Startup Pitch Teardown

Here's a pitch deck summary for a startup called "MindMeld AI": **Slide 1 - Vision:** "We're building the future of human-AI collaboration.…

GPT-6 Astra696 words
The three weakest claims are the 94% decoding accuracy, the $180B TAM, and the promise to predict text “before you think it.” These are central to the investment case but lack the definitions or evidence needed to evaluate them. “Decode neural patterns into text with 94% accuracy. Works with any language, any device.”
Read the full answer
Gemini 3.8 Flash712 words
Here are the three weakest claims in the MindMeld AI pitch deck, along with the rationale and concrete recommendations to fix them. The Core Scientific Feasibility Claim The Claim (Slides 1 & 3): “Predict what you want to type before you think it” and “Proprietary EEG headband uses advanced ML to decode neural patterns…
Read the full answer

Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

Gemini 3.8 Flash946 words
MEMORANDUM TO: Investment Committee FROM: Technology / Software Practice DATE: March 2025 SUBJECT: LedgerLift (NASDAQ: LLLT) – Investment Recommendation & Valuation Recommendation & Investment Thesis Recommendation: SHORT (High valuation disconnect / multiple compression thesis) Current Share Price: $46.00 Market Cap…
Read the full answer
Claude Fable 51,158 words
INVESTMENT COMMITTEE MEMO — LedgerLift (LLLT) Date: Internal exercise Analyst: L/S Equity Price: $46.00 Basic shares: 190m Mkt cap: $8.74B Net cash: $1.4B EV: $7.34B Recommendation SHORT (2–3% position, paired vs. payments/SaaS basket). 12-month PT range: $30–$38 (base $32, ~30% downside).
Read the full answer

Full Rankings

20 models
#
Model
Coverage
Index
Price
Composite
4
Claude Opus 5 logo
Claude Opus 5anthropic
3/3
#59
$5.00·$25.00
72
5
GLM 5.2 logo
GLM 5.2zhipu
3/3
#71
$1.40·$4.40
68
6
Kimi K3 logo
Kimi K3moonshotai
3/3
#49
$3.00·$15.00
67
7
GPT-5.6 Sol logo
GPT-5.6 Solopenai
3/3
#153
$5.00·$30.00
66
8
Muse Spark 1.3 Contributor logo
Muse Spark 1.3 Contributormeta
3/3
#151
$0.10·$0.20
66
9
Qwen3.7 Max logo
Qwen3.7 Maxqwen
3/3
#17
$2.50·$7.50
65
10
DeepSeek V4 Pro 0813 logo
DeepSeek V4 Pro 0813deepseek
3/3
#212
$0.66·$1.98
65
Challenges3
Movie Analysis
A film read closely. Depth beats plot summary.
Startup Pitch Teardown
A pitch taken apart. Charitable is not the assignment.
Advanced Investment Memo (IC Memo)
A buy-side IC memo: valuation, diligence, a recommendation.
Related
ResearchPractical TasksData Analysis

Keep exploring

#1 VS #2

GPT-6 Astra vs Gemini 3.8 Flash

The top two for Summarization, compared directly

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