Bank of Oklahoma Financial Realizes Revenue Enhancement and Cost Reduction Through Carreker-Antinori's "Total Solutions" Approach.

DALLAS--(BUSINESS WIRE)--April 23, 1999--

Experts from both Institutions Present Initiative at BAI's

Transaction Processing Conference

At the Bank Administration Institute's (BAI) Transaction Processing Conference in Miami Beach, Paul "Mike" Elvir, EVP, Bank of Oklahoma (NASDAQ:BOKF) and Mike Inman, Managing Principal, Carreker-Antinori, Inc. (NASDAQ:CANI) presented the results of a recent consulting engagement Carreker-Antinori performed for the bank. By combining new technologies and best practices, Carreker-Antinori was able to re-engineer Bank of Oklahoma (BOK) operations, resulting in new revenues and reduced operating costs for the bank.

"What this ultimately means for us is that Carreker-Antinori's services have created an opportunity to improve our efficiency ratio and enhance shareholder value," says Elvir.

After extensively evaluating the bank's priorities, processes and market presence, Carreker-Antinori was able to identify revenue enhancements utilizing market segmentation, and by re-deploying non-earning assets and optimizing BOK's reserve and cash disposition.

Commenting on how BOK enhanced revenue through market segmentation and cost reduction, Inman says, "In order for the bank and Carreker-Antinori to fully understand BOK's market segmentation potential, we asked them to engage in a step-by-step process whereby components of price, elements of sensitivity and untapped opportunities were identified. For example, the first step was to gain insight into customer needs and their price sensitivities by defining key customer float and earnings credit sensitivities, creating and account analysis database, analyzing the customer mix and interviewing the bank's product manager sales force."

In order to reduce BOK's non-earning assets, Carreker-Antinori assisted the bank in reducing its reservable liabilities and cash inventories. Carreker-Antinori identified opportunities to reduce the bank's reserve requirements below cash levels, creating an excess cash position. To help the bank reduce this excess cash, Carreker-Antinori used a two step process. The first involved a review of the bank's branches, vaults and ATMs, which resulted in the identification of tactical cash reductions. The expected cash reductions are estimated at 10-15 percent. However, without a tool for ongoing management of cash inventories, cash reductions are likely non-sustainable. Therefore, step two involved the implementation of the CashTracker system, an automated cash tracking tool that provides cash consumption reports/graphs and target cash inventory levels. It is expected that BOK will sustain a 25+ percent cash reduction.

"We are pleased with Carreker-Antinori's recommendations and expect to significantly enhance the bank's opportunity for revenue growth and cost reduction," says Elvir. "Going forward, our competitive challenges, as well as merger and acquisition opportunities will only increase, resulting in a continued focus on the bank's efficiency ratio. We look forward to partnering with Carreker-Antinori to assist us in identifying and leveraging these future endeavors."

BOK Financial Corp. Tulsa, Oklahoma-based BOK Financial Corp (NASDAQ: BOKF) is a multi-bank holding company with $5.7 billion in assets, whose bank subsidiaries are Bank of Oklahoma, N.A., Bank of Arkansas, N.A., and Bank of Texas, N.A. It has 73 bank locations in three states. Other operating units include Bank of Arkansas Mortgage Group, BOK Mortgage, BOK Trust, Bank of Texas Trust Co., N.A., and TransFund Electronic Funds Transfer Network.

Carreker-Antinori, Inc. is a leading provider of integrated consulting and software solutions that enable banks to increase their revenues and/or reduce their costs. The Company's offerings include revenue enhancement, payment systems, and emerging solutions. The Company's customers include 170 financial institutions in the U.S., Canada, United Kingdom, Ireland, and Australia, including 70 of the largest 100 banks in the United States. For more information about Carreker-Antinori, please visit our web site at www.carreker-antinori.com.

Forward-Looking Statements. This press release contains forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Such statements are based upon current expectations and are subject to a number of factors and uncertainties which could cause actual results to differ materially from those described herein. There can be no assurance that the solutions will achieve the benefits projected. The forward looking statements set forth in this press release are also subject to the public filings with the Securities and Exchange Commission by BOK Financial Corp and Carreker-Antinori, including those discussed under "capital risk factors" in BOK Financial Corp's 10-K filings and in Carreker-Antinori's Prospectus dated May 20, 1998.