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Fusion Max 2.0

Stronger fusion. Lower task costs.

Fusion Max 2.0 is our next-generation fusion model, with stronger capabilities for office work, document analysis, and web development. It selects suitable models step by step in multi-turn agent tasks and combines their different approaches at critical steps.

Across reasoning, terminal work, professional documents, and office questions, Fusion Max 2.0 delivers leading performance on par with GPT-6 Astra and Claude Fable 5.1 at substantially lower task costs. Prices are also lower across the Max and Code families. Sign up and start using Fusion through our self-service platform.

01 / FUSION MAX 2.0

Surpass leading models at 1/6 the cost

Evaluation results

USD / AVERAGE TIME: MIN / —: NOT PROVIDED

Cost is the total cost of all tasks in each evaluation (USD). Average time is measured in minutes per task.

Terminal tasksNEW

Terminal Bench 4.0*

ModelScoreTotal costAvg. time
Max 2.058.73%$38274.26
GPT-6 Astra57.46%$55441.65
Fable 5.157.14%$1,12559.6
Software development and optimization, data processing, and scientific computing in a terminal.
Professional document tasksNEW

GDP.pdf

ModelScoreTotal costAvg. time
Max 2.037.0%$383.9
GPT-6 Astra31.0%$2083.2
Fable 5.126.2%$2773.2
Evidence-based reasoning over professional PDFs, including manuals, contracts, reports, and technical drawings.
Office document question answeringNEW

OfficeQA Pro

ModelScoreTotal costAvg. time
Max 2.070.7%$54.073.8
GPT-6 Astra69.9%$98.51.8
Fable 5.162.4%$1,129.54.1
Cross-document retrieval, table verification, and numerical reasoning over U.S. Treasury Bulletins.
Deep reasoning

GPQA Diamond

ModelScoreTotal costAvg. time
Max 2.095.5%$4.50.5
Max 1.094.9%$131
GPT-6 Astra96.1%$140.6
Fable 5.193.7%$270.6
+0.6 pp · −65.4% cost vs Max 1.0
Terminal tasks

Terminal Bench v2.1

ModelScoreTotal costAvg. time
Max 2.089.5%$389
Max 1.086.5%$7415
GPT-6 Astra88.4%$1075
Fable 5.191.4%$3699.3
+3.0 pp · −48.6% cost vs Max 1.0
Science question answering

XBench ScienceQA

ModelScoreTotal costAvg. time
Max 2.079.0%$2.10.4
Max 1.078.4%$3.850.6
GPT-6 Astra74.6%—1.4
Fable 5.174.6%—0.23
+0.6 pp · −45.5% cost vs Max 1.0

* Terminal Bench 4.0 uses the 63-task CPU-only subset. Baselines: GPT-6 Astra (max), Claude Fable 5.1 (max with fallback).

TERMINAL BENCH 4.0

Scores and costs across more models

↖ Upper left is better: higher scores at lower cost.

Fusion modelsOther modelsPareto frontier
Terminal Bench 4.0* scores, evaluation costs, and Pareto frontier↑ Score (%)010203040506070$10$20$50$100$200$500$1k$2kEvaluation cost (USD, log scale) →Fusion Max 2.0GPT-6 AstraClaude Fable 5.1Opus 5.5Sonnet 5.5Opus 5Fable 5Opus 4.8Gemini 3.8 FlashGPT-6 LunaGemini 3.7 FlashFusion Max 2.0GPT-6 AstraClaude Fable 5.1Opus 5.5Sonnet 5.5Opus 5Fable 5Opus 4.8Gemini 3.8 FlashGPT-6 LunaGemini 3.7 Flash

The dashed line traces the Pareto frontier: the best scores at different costs.

From Max 1.0 to Max 2.0

Three evaluations · compared with Fusion Max 1.0

1.02.0
Deep reasoning

GPQA Diamond

Higher score
95.5%+0.6 pp

Max 1.0 94.9% → Max 2.0 95.5%

Total evaluation cost (USD)−65.4%
Max 1.0$13
Max 2.0$4.5
Average time (min)−50%
10.5
Terminal tasks

Terminal Bench v2.1

Higher score
89.5%+3.0 pp

Max 1.0 86.5% → Max 2.0 89.5%

Total evaluation cost (USD)−48.6%
Max 1.0$74
Max 2.0$38
Average time (min)−40%
159
Science question answering

XBench ScienceQA

Higher score
79.0%+0.6 pp

Max 1.0 78.4% → Max 2.0 79.0%

Total evaluation cost (USD)−45.5%
Max 1.0$3.85
Max 2.0$2.1
Average time (min)−33.3%
0.60.4

Generation-to-generation comparisons cover GPQA Diamond, Terminal Bench v2.1, and XBench ScienceQA.

02 / FUSION MAX 2.0

Read scanned tables. Connect evidence across long documents.

Office work often starts with difficult source material: hard-to-read figures in scanned tables, inconsistent reporting versions, or evidence scattered across dozens of PDF pages. These two examples show Fusion reading the data accurately and connecting the evidence to meet more requirements at lower cost.

OfficeQA / SCANNED TABLES

Read the figures and reconcile definitions across scanned tables

A task from historical bulletins: retrieve tables, verify 24 months of spending, then calculate.

The tables are scanned images. Reading a number is only the start.

  1. Read ambiguous figures

    Dense rows, faint print, and footnotes complicate extraction. Magnify and verify uncertain readings.

  2. Reconcile versions and definitions

    Find monthly figures with the same scope across reports, without omissions or mixed versions.

  3. Aggregate as requested

    Verify all 24 monthly values, then align the price basis and calculate.

Original scanned table: dense headings, monthly values, footnotes, and faint figures
Original task evidence · click to enlarge. Fusion magnified uncertain figures fivefold and cross-checked other tables.
See the full question, calculation, and source check

Original question: How much more did the U.S. spend on defense and related activities in 1953 than in 1940? Compare at 1953 prices and answer in millions of dollars.

Convert the 1940 total to 1953 prices

2,7801940 annual total× (26.8 ÷ 14.0)Price-level ratio5,321.71At 1953 prices
Defense and related activities · 1953 prices · million USD
1940converted5,321.71
195344,463

44,463 − 5,321.71 = 39,141.29

Two tables gave January 1953 readings of 3,632 and 3,532. Fusion magnified the printed detail fivefold, then cross-checked other tables.

JANUARY 1953 · MILLION USD

January spending: 3,632 or 3,532?

3,632vs3,532
LOCATE JANUARY IN THE TABLE1×
1953 spending table pictured in the case report, with 3,632 visible in the January defense and related activities column
MAGNIFY THE FIGURE5×
Fivefold magnification of the same table area to inspect the January spending figure
THEN CROSS-CHECK OTHER TABLES

Inspect → cross-check → sum 12 months

1940 TOTAL2,780MILLION USD
1953 TOTAL44,463MILLION USD

These are individual evaluation runs illustrating the process and supporting evidence. Aggregate capability and cost results are shown above. The evaluation agent provides file access and tool execution.

03 / FUSION MAX 2.0

Turn a short brief into an interactive webpage

Fusion Max 2.0 generated these two browser games from one-sentence requests. They demonstrate interfaces, interaction logic, and state management, from character selection and upgrades to collisions, levels, and score tracking. Play the generated results below.

ONE-SENTENCE PROMPT

Make a roguelike game
GENERATED BY FUSION MAX 2.0
01 / 02
Emberline game preview
PLAY IN YOUR BROWSER

Emberline

Eight floors, three characters, and new blessings as you level up.

A top-down roguelite. Pick one of three light keepers, fight with automatic attacks and evasive dashes, and choose a random blessing when you level up. Spend earned embers on workshop upgrades.

GAME FEATURES

  • Three characters and random blessings
  • Eight floors and boss encounters
  • Workshop progression and builds
  • Keyboard and touch controls

Progress is not saved. Closing the demo, switching games, or scrolling past it ends the session.

04 / FUSION MAX 2.0

One fusion model. The strengths of many.

Complex tasks involve multiple rounds of reasoning, tool use, and decisions. The capabilities they need change along the way. Fusion selects a suitable model at each step and combines multiple approaches at critical steps, all through one model API.

Match the model to the task at each step

We study the capabilities of different models through extensive benchmarking and use that knowledge to train our own routing model. Fusion Max 2.0 uses a new generation of this router to make a fresh selection at each step of a multi-turn agent conversation, based on the current task context.

From understanding a request and taking action to interpreting tool results, Fusion matches model strengths to the work as it progresses and allocates computation as needed.

Combine approaches at critical steps

For critical problems that a single model struggles to resolve, Fusion brings in multiple models to analyze and solve the problem from different perspectives, then synthesizes their conclusions into an answer.

Step-by-step model selection and model fusion at critical steps work together in Fusion. You can access both capabilities through a model API in your own applications and agents.

Read the Fusion whitepaper →
05 / FUSION MAX 2.0

Lower prices across Max and Code

Standard rates · USD / million tokens
ModelInputCached inputOutput
Fusion Max2.0 / 1.0
$5.00$3.00↓ 40%
$0.50$0.30↓ 40%
$30.00$20.00↓ 33.3%
Fusion Code1.0
$3.00$2.00↓ 33.3%
$0.60$0.50↓ 16.7%
$10.00$6.00↓ 40%

Each model’s long-context rates apply when input exceeds 200K tokens. Internal model-collaboration tokens are not billed. Token rates and the total cost of a task are different: task cost also depends on input, output, caching, and the number of calls.

See full pricing →
GET STARTED

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Your application or agent provides file access and tool execution when the task needs them. Enterprise teams can also contact us to discuss workload evaluations and integration requirements.