LLMprime-intellect

Prime Intellect: INTELLECT-3

INTELLECT-3 is a 106B-parameter Mixture-of-Experts model (12B active) post-trained from GLM-4.5-Air-Base using supervised fine-tuning (SFT) followed by large-scale reinforcement learning (RL). It offers state-of-the-art performance for its size across math,...

Anyone in the Space can @-mention Prime Intellect: INTELLECT-3 with the team's shared context - pooled credits, one chat, one memory.

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Verdict

INTELLECT-3 offers a 128K context window at $0.20/$1.10 per Mtok — roughly 40% cheaper than GPT-4o on input and competitive on output. Without public benchmarks, you're betting on Prime Intellect's internal evals and your own testing. The pricing makes it worth piloting for high-volume text tasks where you can validate quality in-house. Best suited for teams willing to run their own accuracy checks in exchange for cost savings on long-context workloads.

Best for

  • Cost-sensitive long-context summarization
  • High-volume document processing pipelines
  • Internal tooling where you control eval
  • Prototyping before scaling to pricier models

Strengths

The 128K context window handles full research papers, legal contracts, or multi-file codebases in one pass. Input pricing at $0.20/Mtok undercuts most frontier models by 30-50%, making it viable for batch jobs that process thousands of documents daily. Output at $1.10/Mtok stays in range of mid-tier alternatives. The proprietary license suggests active development, though transparency on training data and architecture remains limited.

Trade-offs

Zero public benchmarks means you cannot compare reasoning, coding, or instruction-following against Claude, GPT-4, or Gemini before committing. Early-stage models often lag on nuanced tasks like multi-step logic, creative writing tone, or domain-specific jargon. The lack of multimodal support rules out vision or audio workflows. Teams accustomed to well-documented performance on MMLU, HumanEval, or MT-Bench will need to design custom evals or accept higher risk during initial deployment.

Specifications

Provider
prime-intellect
Category
llm
Context length
131,072 tokens
Max output
131,072 tokens
Modalities
text
License
proprietary
Released
2025-11-27

Pricing

Input
$0.20/Mtok
Output
$1.10/Mtok
Model ID
prime-intellect/intellect-3

Per-token prices show what the model costs upstream. On Switchy your team draws from one shared org credit pool - one plan, one balance for everyone.

Team cost calculator

Estimated monthly spend
$8.27
17.6M tokens / month
5 seats · 80 msgs/day

Switchy meters this against your org's shared credit pool - one plan, one balance for everyone.

Providers

ProviderContextInputOutputP50 latencyThroughput30d uptime
prime-intellect131k$0.20/Mtok$1.10/Mtok

Performance

Performance snapshots are collected daily. Check back after the next ingestion run.

Benchmarks

Public benchmark scores are not available yet for this model. Check back after the next ingestion run.

Works well with

Top MCPs

Compatibility data comes from first-party telemetry; once we have enough co-usage signal, top MCPs for this model will appear here.

How Switchy teams use it

Not enough Spaces have used this model yet to share anonymised team stats. We wait for at least 50 distinct Spaces per week before publishing any aggregate.

Starter prompts

Summarize Research Paper

Read the attached 40-page research paper and produce a 300-word summary covering the core hypothesis, methodology, key findings, and limitations. Use plain language accessible to a non-specialist.
Open in a Space →

Extract Contract Clauses

Review this 80-page commercial lease agreement and list all clauses related to termination rights, renewal options, and liability caps. Format as a bulleted list with section references.
Open in a Space →

Compare Policy Documents

I've provided two versions of our data retention policy (v2.1 and v3.0). Identify every substantive change between them, noting additions, deletions, and modifications. Organize by policy section.
Open in a Space →

Generate FAQ from Docs

Using the product documentation I've attached, create a 10-question FAQ that anticipates the most common user questions. Each answer should be 2-3 sentences and cite the relevant doc section.
Open in a Space →

Batch Invoice Analysis

Process this batch of 50 invoices. For each, extract vendor name, invoice number, date, line items, subtotal, tax, and total. Return results as a CSV with one row per invoice.
Open in a Space →

Example outputs

Illustrative - representative of the model's voice and quality, not literal recordings.

Prompt

Review this Python function for potential race conditions. It's meant to update a shared counter across multiple threads, but we're seeing inconsistent results in production.

Output

The function lacks thread synchronization. When multiple threads call `increment_counter()` simultaneously, the read-modify-write sequence isn't atomic. Thread A reads the value (say, 100), Thread B reads 100 before A writes back, both increment to 101, and one update is lost. Wrap the critical section with `threading.Lock()` or use `threading.local()` if each thread needs its own counter. The 131k token context means you can paste your entire codebase here — I'll trace how this counter flows through your application and flag every call site that needs protection.

Notes

This example highlights the model's 131k context window advantage for whole-codebase analysis. The explanation is methodical and includes concrete remediation steps. However, at $1.10/Mtok output, lengthy code reviews become expensive quickly — users should prompt for targeted analysis rather than exhaustive commentary.

Prompt

Explain the Byzantine Generals Problem to a junior engineer who just joined our distributed systems team. They need to understand why our consensus algorithm works the way it does.

Output

Imagine three generals surrounding a city. They must all attack together to win, but they can only communicate by messenger — and some messengers might be traitors who change the message. General A sends 'attack at dawn' to B and C. If the messenger to C is a traitor, C receives 'retreat'. Now C thinks the plan is split, but A and B think everyone agreed. The Byzantine Generals Problem asks: how do you reach consensus when some participants might lie or fail? Your consensus algorithm solves this by requiring a supermajority (2f+1 nodes to tolerate f failures) and using cryptographic signatures so nodes can't forge messages. Each node collects votes, verifies signatures, and only commits when enough honest nodes agree.

Notes

Demonstrates the model's ability to translate complex distributed systems concepts into accessible explanations without oversimplifying. The analogy is clear and the connection to practical implementation is direct. The $0.20 input pricing makes it economical for knowledge-sharing tasks where you're pasting documentation or RFCs for summarization.

Prompt

Generate a SQL migration script that adds a 'deleted_at' timestamp column to our 'users' table for soft deletes, updates our existing queries to filter out soft-deleted records, and creates an index for performance.

Output

```sql -- Migration: Add soft delete support to users table ALTER TABLE users ADD COLUMN deleted_at TIMESTAMP NULL DEFAULT NULL; CREATE INDEX idx_users_deleted_at ON users(deleted_at) WHERE deleted_at IS NULL; -- Update existing views CREATE OR REPLACE VIEW active_users AS SELECT * FROM users WHERE deleted_at IS NULL; ``` The partial index (`WHERE deleted_at IS NULL`) keeps the index small since most records aren't deleted. Your existing `SELECT * FROM users` queries now return soft-deleted records — you'll need to add `WHERE deleted_at IS NULL` to each query or switch to the `active_users` view. Consider adding a cleanup job to hard-delete records after 90 days.

Notes

Shows practical SQL generation with performance considerations baked in. The partial index suggestion and the warning about existing queries demonstrate awareness of production consequences. The model doesn't have published benchmarks yet, so users should validate generated SQL against their specific database engine and schema before running migrations.

Use-case deep-dives

Long-context legal document review

When 131k context beats GPT-4 for contract analysis teams

A 4-person legal ops team reviewing 80-page vendor contracts needs to extract obligations, flag non-standard clauses, and summarize risk in one pass. INTELLECT-3's 131,072-token window fits most contracts whole—no chunking, no context loss across sections. At $0.20 input per million tokens, loading a 40k-token contract costs under a penny; the $1.10 output rate matters only if you're generating long summaries (most teams extract 500-1000 tokens). The model lacks public benchmarks, so you're betting on the context advantage without MMLU or HumanEval proof. If your contracts average under 100 pages and you need full-document reasoning more than you need leaderboard validation, this is the call. Beyond 200 contracts per day, the output cost starts to hurt—switch to a cheaper long-context alternative or negotiate volume pricing.

Multi-turn customer support escalation

Why INTELLECT-3 handles 20-message support threads without forgetting

A 10-person SaaS support team fields escalations where the thread history spans 15-20 messages, each referencing prior troubleshooting steps, account details, and product behavior. INTELLECT-3's 131k window holds the entire conversation plus internal knowledge base excerpts without truncation. The $0.20 input rate makes loading 8k tokens of thread history negligible; the $1.10 output rate is competitive for 300-word agent replies. The missing benchmarks mean you can't predict coding or reasoning accuracy from public data—test it on 20 real threads before committing. If your threads stay under 50 messages and you value context retention over raw speed, this model works. Above 500 escalations per day, the output cost compounds—consider a hybrid flow where you use INTELLECT-3 for context assembly and a cheaper model for final drafting.

Research synthesis from academic papers

When to use INTELLECT-3 for cross-paper literature reviews

A 3-person research consultancy synthesizes findings from 6-10 academic papers per project, each 8-12k tokens. INTELLECT-3's 131k context fits all papers in one prompt, letting the model compare methodologies and extract contradictions without re-prompting. At $0.20 input, loading 60k tokens costs $0.012; the $1.10 output rate is reasonable for 2k-token synthesis reports. The absence of public benchmarks is a red flag for reasoning-heavy tasks—you're trusting the vendor's internal evals without GPQA or MMLU scores to anchor expectations. If your synthesis is citation-heavy and you need cross-document reasoning more than you need proven accuracy on standardized tests, try a 10-project pilot. Beyond 100 projects per month, the output cost becomes a line item—negotiate or move to a model with published reasoning benchmarks and lower output rates.

Frequently asked

Is Prime Intellect INTELLECT-3 good for general text tasks?

Without public benchmarks, it's hard to say definitively. The 131k context window handles long documents well, but you're buying blind on quality. At $0.20/$1.10 per Mtok, it's cheaper than GPT-4 class models, so if you're willing to test it yourself for your specific use case, the price makes experimentation low-risk.

Is INTELLECT-3 cheaper than GPT-4o or Claude Sonnet?

Yes, significantly. GPT-4o runs $2.50/$10.00 per Mtok and Claude Sonnet 3.5 is $3.00/$15.00 per Mtok. INTELLECT-3 at $0.20/$1.10 is roughly 12x cheaper on input and 9-13x cheaper on output. The trade-off is zero public benchmark data, so you're saving money but taking a quality gamble.

Can INTELLECT-3 handle 128k token contexts effectively?

The 131k window is there, but without needle-in-haystack or long-context recall benchmarks, we can't confirm how well it actually uses that space. Most models degrade past 64k tokens. Test it on your real documents before committing to long-context workflows—advertised window size and usable performance often diverge.

How does INTELLECT-3 compare to earlier Prime Intellect models?

No data available. Prime Intellect hasn't published version comparisons or benchmark progressions for INTELLECT-3 versus any predecessors. If you used an earlier version, you'll need to run your own evals. The pricing and context window are the only concrete upgrade signals we have.

Should I use INTELLECT-3 for production chatbots or customer support?

Only if you can afford to test thoroughly first. The price is attractive for high-volume use cases, but the lack of public benchmarks means you don't know how it handles edge cases, refusals, or instruction-following compared to proven models. Budget time for quality assurance before going live.

Data last verified 7 hours ago.Sources aggregated hourly to weekly. See docs/architecture/model-directory.md.