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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-6.1 Sol leads at 78.2/100. Drawn from Rival's open dataset of 21,000+ human preference votes.

Rival’s pick·Openai flagship

Too close to call
GPT-6.1 SolOpenAIGPT-6.1 Sol and GLM 5.3 Prime are virtually tied for Summarization. Slight edge to GPT-6.1 Sol. Rising fast but not yet battle-tested in community votes.

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

  1. GLM 5.3 PrimeZ.ai$2.80·$8.80Input $2.80 · output $8.80, per 1M tokens
    #277Composite
  2. GPT-6.1 SolOpenAI$2.00·$10.00Input $2.00 · output $10.00, per 1M tokens
    #178Composite
  3. Gemini 3.8 FlashGoogle AI$0.75·$3.75Input $0.75 · output $3.75, per 1M tokens
    #375Composite

Head-to-head

  • GPT-6.1 SolvsGLM 5.3 Prime
  • GPT-6.1 SolvsGemini 3.8 Flash
  • GLM 5.3 PrimevsGemini 3.8 Flash

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-6.1 Sol1,108 words
Spoilers for both films follow. Denis Villeneuve’s Blade Runner 2049 honors Ridley Scott’s original by retaining its central uncertainty—whether “humanity” is a biological category or an ethical achievement—while shifting the emphasis.
Read the full answer
Gemini 3.8 Flash1,192 words
Denis Villeneuve’s Blade Runner 2049 (2017) stands as a rare cinematic achievement: a legacy sequel that neither lazily replicates nor recklessly dismantles its predecessor. While Ridley Scott’s 1982 Blade Runner adapted Philip K.
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-6.1 Sol738 words
The three weakest claims are the technical performance, market size, and commercial traction claims. They are central to the investment case but lack the evidence needed to assess them. “Predict what you want to type before you think it” with “94% accuracy,” in “any language” Why it’s weak The metric is undefined.
Read the full answer
GLM 5.3 Prime618 words
3 Weakest Claims in the MindMeld AI Pitch The 94% Accuracy Claim (Slide 3) Why it's weak: This number is almost certainly misleading or fabricated. Non-invasive EEG is a notoriously low-bandwidth, noisy signal.
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…

GLM 5.3 Prime1,086 words
IC Memo: LedgerLift (LLLT) — B2B Spend Management SaaS Analyst: L/S Equity Fund Date: Internal draft Fictional exercise — not investment advice Recommendation SHORT. 12-month price target range: $32–$40 (current: $46).
Read the full answer
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

Full rankings

20 models
#ModelCoverageIndex
  • 4Claude Fable 5Anthropic
    3/3    #14$10.00·$50.00Input $10.00 · output $50.00, per 1M tokens72
  • 5Claude Sonnet 5.5Anthropic
    3/3    $2.00·$10.00Input $2.00 · output $10.00, per 1M tokens71
  • 6DeepSeek V4.1 FlashDeepSeek
    3/3    $0.15·$0.60Input $0.15 · output $0.60, per 1M tokens70
  • 7InklingThinking Machines
    3/3    #12$1.00·$4.05Input $1.00 · output $4.05, per 1M tokens69
  • 8Grok 4.7xAI
    3/3    $1.60·$4.80Input $1.60 · output $4.80, per 1M tokens66
  • 9Kimi K3Moonshot AI
    3/3    #46$3.00·$15.00Input $3.00 · output $15.00, per 1M tokens66
  • 10GPT-5.6 SolOpenAI
    3/3    #155$5.00·$30.00Input $5.00 · output $30.00, per 1M tokens65
  • 11Qwen3.7 MaxQwen
    3/3    #29$2.50·$7.50Input $2.50 · output $7.50, per 1M tokens63
  • 12Muse Spark 1.3 ContributorMeta AI
    3/3    #190$0.10·$0.20Input $0.10 · output $0.20, per 1M tokens63
  • 13Gemma 4 26B A4BGoogle AI
    3/3    #28$0.13·$0.40Input $0.13 · output $0.40, per 1M tokens60
  • 14Qwen3.8 27BQwen
    3/3    #23$0.40·$3.00Input $0.40 · output $3.00, per 1M tokens60
  • 15Gemini 3.1 Pro PreviewGoogle AI
    2/3    #7$2.00·$12.00Input $2.00 · output $12.00, per 1M tokens60
  • 16Seed 2.0 CodeByteDance
    3/3    $0.50·$3.00Input $0.50 · output $3.00, per 1M tokens59
  • 17Kimi K2.7 CodeMoonshot AI
    3/3    #141$0.95·$4.00Input $0.95 · output $4.00, per 1M tokens59
  • 18MiMo-V2.5-ProXiaomi
    3/3    #60$1.00·$3.00Input $1.00 · output $3.00, per 1M tokens59
  • 19Claude Opus 5.5Anthropic
    3/3    #270$4.00·$20.00Input $4.00 · output $20.00, per 1M tokens58
  • 20Qwen3.6 27BQwen
    3/3    #1$0.33·$3.25Input $0.33 · output $3.25, per 1M tokens57

Challenges3

  • Movie AnalysisA film read closely. Depth beats plot summary.
  • Startup Pitch TeardownA pitch taken apart. Charitable is not the assignment.
  • Advanced Investment Memo (IC Memo)A buy-side IC memo: valuation, diligence, a recommendation.

Related

  • Research
  • Practical Tasks
  • Data Analysis

Keep exploring

  • GPT-6.1 Sol vs GLM 5.3 PrimeThe top two for Summarization, compared directly
  • Best AI for ResearchSee which models rank highest here
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